I’d say manipulation is a big one (ex. i’ll k!ll myself if you leave me) obviously physical abuse when being with your s/o instantly kills your mood, often arguments trying to convince you to do things you do not want to do / things that make you uncomfortable after arguing, will come to you and say how sorry they are and talk about how much you guys are meant to be with eachother, and says they will change, but they do not change and the cycle repeats
these are just signs for me!! they may not fit you situation
If you were in a situation where in which you met someone who became very close friends with you, or started dating you. They slowly isolated you from your family and friends. They would make offhand comments about a friend of yours, or mention something a sibling did. They would make you feel like you could trust them and only them. But then they would do things that you question and ask them about. That's when the manipulation starts even worse. Gaslighting and lying, leaving you after every conversation feeling like the bad guy. They get you to do what they want and you're unhappy, and you don't even realize there's something wrong with the relationship as it slowly eats away at your self esteem.
Explanation:
I'm not sure if this is what you're looking for, but I've done quite a bit of research on manipulative abusive relationships because I never want to be in one or for my friends to be in one. If anyone thinks I mixed something up or gotten something wrong I'll be happy to fix it!
