Not Always Feeling It

There are times when I’m really horny and very much enjoy ass play and sexting some guys I’ve met online. They seem to enjoy it. I promised this guy I’d do an anal play session with him online this week, I even bought a new toy and some jocks to wear, but honestly I’m not really feeling it.
Why do I bounce back and forth between being a straight guy into women but then other times wanting to be a total bottom?