Liberty wrote:

I kind of head-canon him as gay, but I don't know if it really matters.  I agree that there does seem to be a sexual element in his attraction to Sherlock.  Sherlock certainly sees him as sexual.  But I think Moriarty also uses sexuality to unsettle people, regardless of gender, in a similar way to Magnussen.  I don't think it's so much a case of him fancying them as him wanting to make them uncomfortable or maybe manipulate them. 

I don't think Jim from IT is an aspect of Moriarty.   I think he's entirely a creation of Moriarty's, a disguise.  The signs that Sherlock picks up on are all clues that Moriarty left for him.   Which was quite audacious really - he absolutely fools Molly, which is probably easy enough, but with Sherlock he lets him think that he sees through him, when in fact he's only seeing the surface layer.  He doesn't pick up that this is somebody in disguise.  I love that scene ... particularly as Sherlock is pointing out that John misses out on anything important with the shoes, while doing exactly the same thing with Jim!

I too loved that scene  I agree with your point that 'Jim from It'  was a facade Moriarty put on to make a fool out of Sherlock and all the other points about him using sexuality to intimidate people but I just feel that Moriarty's psychotic obsession with Sherlock has some how manifested into sexual infatuation and attraction or it might just be that he's attracted to intelligence which is what I think of Sherlock but we won't get into that just yet.
When we see Moriarty interact with other although it's only been a few times he not as sensual, for lack of a better word,  shall we say than he is towards Sherlock. You could argue that he does this to make Sherlock uncomfortable but I feel like he does it in a way that Sherlock would observe it to be him trying to make him uncomfortable but it's actually Jim expressing his attraction towards Sherlock. Cuz if there is one thing Jim Moriarty is

It's obvious that Moriarty has known about Sherlock since they were kids (the case of the drowned boy - Sherlock's first ever case that he wasn't able to solve) but why does he approach him now 22 years later. Sherlock had know idea who he was and I think he would have been happy having no idea who Moriarty was. He was the one who put himself on Sherlock's radar (through the cab driver).
I have a few theories as to why Moriarty is now targeting Sherlock.

1) He's Angry at Sherlock - As we all know Sherlock has an obsessive personality and he was obsessed about the case of the drowned boy and he was close to solving it but didn't have all the pieces so he gave up. I think that angered young Moriarty because this little genius had found his counter part and he just gave up on him he wasn't good enough for the great Sherlock to obsess over. So he created an evil empire became a Consulting crimanl and now that he was on top of the world he would take Sherlock down.

2) He was bored - Like Sherlock he is also an adrenaline junkie and he basically has the criminal world at his feet none could stop him, none even came close except for Sherlock and he wanted to go up against someone he felt was his intellectual match and like Sherlock he is/was willing to die to prove his intelligence.

3) Moriarty was dying - I felt like Moriarty had the criminal world at his feet, he had everything and he was happy but he had like a brain tumour ( like the cab driver) or something and he wanted to go out on a high by defeating his long time enemy Sherlock(unbeknown to the latter), because I felt like Moriarty put way too much effort into the destruction of Sherlock for him just being bored I feel like he knew he wasn't going to live through it and you know what they say "Go big or go home". And technically when Moriarty shot himself in the head he was winning, if he is in fact dead, he died haven beaten Sherlock.

These are my theories please tell me what you think.

JP wrote:

Folks, if Sherlock really wanted to kill himself by overdosing - he would be dead. Just saying.

You have a point. Personally I think that if Sherlock were to kill himself he would end more spectacularly. He would want people to talk about how he died like when he did in the Reichenbach Fall.

Liberty wrote:

My pet theory is that he was setting up John to get rid of Magnussen, and is shocked when Sherlock takes the fall 

I agree with that and I think he misjudged Sherlock's love for John, but I also think he thought if John was in harms way Sherlock's mind would go into overdrive and figure out a way to defeating Magnussen he just didn't expect that he would shoot someone for John.
 

Does anyone think ther might be a Sherlock dr cross over.

Liberty wrote:

He does occasionally put Sherlock in danger.  The hiatus must have been risky (even the fall was risky!).  And of course, he sends him off to his probable death (or appears to!) at the end of HLV.   He even makes the point that he won't give in to sentimentality over it. 

Sorry to say this but I believe you are wrong everything Mycroft does in regards to Sherlock has everything to do with sentimentality although he says otherwise. Mycrofts missions for Sherlock only ever put him in more trouble but Mycroft knows his brother would never take a case if there wasn't at least a 70% chance he could get hurt, go insane (Baskerville) or die therefore those are the cases he gives him because Sherlock is an adrenaline junkie and if he doesn't get his high off his cases he does drugs and that is the last thing Mycroft want therefore he gives him dangerous cases.
 

SusiGo wrote:

Question: is this a good thing? I doubt this.

I think his obsession is a good thing as he only seems to have his brothers best interest in mind. Like when he first approached John I think that was to see if John would betray Sherlock or not which he didn't. And whenever it looks like Sherlock might be getting back on drugs he's the first to notice and ask Sherlock for the list. I think so far his obsession is healthy and he does't get in his brothers way or becomes dangerously obsessive like Moriarty.