How do I know if I'm the problem in my relationship?

You don't take responsibility for your actions.. If everything is always your partner's fault and never your own, you're probably being a bit biased or irrational. If you don't easily say, "I'm sorry," and instead blame your actions on someone else, it's a sure-fire way to relationship disaster.

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And another question, how do you know if someone is manipulating you?

Signs Someone Is Manipulative They Will Guilt Trip You. They Ignore Your Input. They Don't Give You Much Time To Decide. They Don't Help Resolve Problems. They Undermine Your Self-Confidence. They Force You Out Of You Comfort Zone. They Butter You Up With Small Requests. They Offer The Silent Treatment. Correspondingly, how do you know if your boyfriend is just using you? Here are 20 big signs he's using you 1) Your phone only lights up after dark. 2) He doesn't protect you. 3) He doesn't open up to you. 4) He doesn't ask about you. 5) You're not going on actual dates. 6) He keeps putting off being "exclusive" 7) He's financially dependent on you. 8) You've never met his friends.