<human>: Give me the gist of the text in a nutshell

My boyfriend is 5'9, 130 pounds. So I suppose he isn't a beanpole, he's at a comfortable weight.  Skinny used to be my type, and to be fair I still find my boyfriend very attractive.  But I can't help but notice guys with broad shoulders.  I'm not into six packs or anything, but the appearance of muscle has gotten very alluring lately.  It's to the point where I can only orgasm if I imagine my boyfriend being stronger.

I suppose this is harmless, but if the roles were reversed is be crushed.  I don't have an ideal body by any means, I'm five pounds overweight for my height.  Recently I've been working to improve my body, but no changes yet.  I'm just feeling really bad about this.

My boyfriend is reasonably active but eats like a typical college student.  He has expressed not wanting to lift and become "huge", but lately he has been despondent about his boyish appearance.  Do I suggest lifting?  I did once about a year ago (we've been dating 4 years) and he made a joke but otherwise didn't acknowledge it.  Do I just quell these thoughts somehow?
<bot>: I've lately started to prefer somewhat muscular guys over thin guys, but my boyfriend is very thin.  I feel bad and worry about losing attraction.