Help me understand and relax.

When you say "boyfriend enjoys MfM sex", does that mean with a generic other man or a specific friend that he has in mind.

Do you enjoy MFM?

If he was gay, he'd be with that guy, not you. Since he's with you, he's not gay.
If he is straight, he has this kink. You have yours. Have fun with each other.
If he's bi, he has chosen you to be his girlfriend over the others. You've won.

You can relax.

 

I dressed up as a hot woman for Halloween tonight.
I got a LOT of attention! Maybe I should look into this further.
More gals than guys interestingly enough. I need a spell like Jeannie on Bewitched! But I'd ditch her mom in a briar patch. PITA.