Hi reader, So here's my problem I'm having you see I'm in a poly relationship with only one other person (we shall call home x) with obviously a main (we'll call her z) now you see z has been dating x for about a year now but before they were on and off but recently I was brought into the relationship by z and been dating her for about 4 months now (purely online for now plans on moving to her in works) and the thing is that me and z are very open with each other about every thing and she has told me that her and her boyfriend haven't had sex in the long relationship they've had. But for some reason (thinking he's trying to start a pissing contest with me and i wont engage in it cause ita one of her pet peeves) recently he's been trying it and for some unknown reason I've been getting upset and even angry when she tells me that they had sex even though she says that he couldn't make her cun and she had to finish herself but even then it angers me so does anyone know why this is or how I can get over it? Is this normal?