Emotional abuse is extremely common. I have been through it in friendships with both boys and girls where they tried to ruin my confidence. Now I cut people off as soon as I sense something negative.
I would be scared to get into another relationship if things don’t work out with my long term partner because what if the new guy ends up a cheat or abuser?
I find it safer to be alone. Sometimes I think if I don’t marry my boyfriend then I won’t have another relationship. I’ll have kids via donor + IVF.