After the night when I hooked up with Vladana and somehow cheated on her twice before the morning, I really decided to get a grip on myself.
I remained friends with Dragana, but I stood firm that there will be no more sexual encounters between us while I'm in a relationship. We could hang out, talk, and that was it. She did try enticing me with a few lewd messages or pics from time to time, but I resisted while keeping it friendly. That didn't stop me from masturbating to said pics, though, but I figured that was innocent enough.
Tijana had moved on, obviously, it was just a one-time drunken fling for her, and that suited me perfectly.
Unfortunately, my relationship with Vladana wasn't going very well. She turned out to be prone to sudden mood swings, and very insecure. She was very jealous of my friendship with Dragana, even though there was nothing else between us now (discounting that one night, but she didn't know that). She also cried a lot, for no apparent reason.
Our sex life was... slow. After two months, the most I got were handjobs. She tried giving me a blowjob once, but said my cock was too thick (???) and gave up. She barely tolerated my foot fetish, let alone anything kinkier.
She also wouldn't let me lick her, or even take off her panties. Then again, her pussy was extremely sensitive, so it was easy for me to bring her to orgasm with my fingers over her panties, sometimes even over the jeans.
It was also very easy for me to arouse her, no matter where or when, with a few touches I'd have her grinding against my hand. Then after she orgasms she'd get embarrassed, and sometimes even angry at me for exciting her in what she deemed an inappropriate time or place.
It all culminated when Dragana invited the both of us to her birthday party. It was a fairly standard college party, with very little light and much music and drinks. I spent most of it making out with Vladana on the couch in a corner.
Between the booze and her usual sensitiveness, she was a hot mess pretty soon after we started. She, of course, reciprocated, and was stroking my cock through my jeans the entire time, which kept me hard and horny out of my mind.