New and saying hello

[~¤DG¤~]

Ok, new day new insecurity.
H is currently staying with a coworker, a female coworker.
He is staying on her couch. Am I stupid to believe that there isn't anything going on?
She is an older woman, about 15 years older and I really don't *think* he would do anything like that to me,
But then I think a man staying with a woman.....

I know he doesn't have many options because his family lives 3 hours away, but I am really really bothered by it.
And now he has a car he is using, and I'm afraid she bought it for him. Not as a gift, but as she paid for it and he is paying her back.

I have absolutely no basis for thinking this, these things just pop into my head and then I start to freak out.