I'm struggling to see a connection between your flatline and possibly being bisexual. If you feel bad after sex with a woman then I don't think that you will feel better after having sex with a guy or a tranny. To me it seems like living out your sexuality in every form and aspect still seems like pretty big part of your life and well being. I personally don't think that this is the path to go, but that's just my personal opinion. I went down the rabbit hole of satisfying all my sexual needs and I can tell you there is no gold pot at the end waiting for you, there is no endpoint to reach. It's gonna be constant monster of lust that has to be satisfied over and over again until you are completely depleted. It's actually a modern myth and illusion that you can only be happy if you satisfy every aspect of your sexuality. If you identify with every thought and sexual expression that arises then you will have a hard time of ever having a balanced and healthy sexuality. I think you are feeling bad through sex because your brain is not able to handle all those neurochemicals and that your brain isn't fully recovered yet. Having a realization that you're bisexual isn't gonna change the fact that your reward system can't handle sex and as I wrote earlier: having sex with strangers isn't a wise thing to do if you earlier in life had problems with this kind of behaviour that led you into PAWS. It could also be that I am missing a point and if so then I am sorry.