Its possible to feel a sense of attachment after having sex with someone you werent really that interested in. Oxytocin is released into the body during intercourse, a hormone which is linked to positive social functioning and is associated with bonding, trust, and loyalty.

Why do you get attached to someone you slept with?

If youre getting attached every time youre sleeping with someone new even though you didnt truly like before, then its probably the oxytocin thats making decisions. Women have oxytocin in abundance, which is why women are more likely to catch feelings after sex as compared to men.