<human>: Hey guys,

I just need some advice. For a few weeks, I have been really intimidated (and slightly jealous) of the friendship between my SO and my friend (probably a PMS thing, but still). My SO and I will be together for 4 years in November (we are engaged and getting married in May). All of us always hang out together, so I'm sure that they are not involved by any means. They just get along so well... in fact, they are basically the exact same person. They are both really competitive, which I am not, so they are like two peas in a pod. We have been seeing a lot of my friend lately, but its just too much for my taste.

Here is the kicker-- she is moving in with us for two months while transitioning to a new place. And I'm just worried I'll get shut out, and since my friend is so reliant on human contact and CAN'T BE ALONE (EVER!), I'm afraid that they will become closer and my SO and I will distance due to lack of "relationship time".

I know this is really ridiculous, but I really just need some advice and comforting.

Thanks.

Can you condense the text into a few key points?
<bot>: Friend and SO are really close, and she is moving in. Not sure how I feel about it. What do I do?