Search Results: asking about sex history

A guy I’ve had a past with is a sex addict and won’t take no for an answer. I’ve blocked a few of his numbers and the other day he made a fake account (pretending to be his ex) (long story about how I found out)
just to stalk me and started asking me questions like “ have you done anything with him” (meaning him) so I said things like why are you asking, he is history and he goes “ I know but it’s been bugging the f*** out of me, I know he likes you”

Can anyone try and answer my question?

Assume:
- You have known him and have a 1 year relationship with him.
- She's known him 3 years, but lives out of state.
- She's 8 years older, significantly less attractive, and a single divorced mom of 2 kids.
- They had sex once but never dated before you met him. You only found out about it 6 months into the relationship because he blundered, but assume with 99% certainty you know they are not currently having sex nor do they have any plans to.
- He gives her money. (To help her with her divorce, to buy Christmas presents for her kids, to pay for her uninsured kids health expenses, and because she can't hold down a job to pay her own living expenses.)
- They have a very similar history with bad family relationships and life struggles so they "click"--in a "friendly" way.
- She allegedly "has no one else" because she's alienated from her family.
- They have both saved each other's lives (domestic abuse and drugs).
- He's attempted to fly her in from out of state to spend the weekend at his apartment without asking you.
- She's asked him for more money behind your back and told him not to tell you. He told you about once you guessed what she was after and why he was stressed/torn up.
- On your anniversary (over a holiday), he had made plans to head back to his home state (which you were ok with), but you specifically told him it would upset you if he spent your special day with her. He said okay, then did it anyway because his other friends bailed on him last minute and it was most convenient.

My boyfriend and I are fighting about this constantly. I feel like he's so very clearly in the wrong and no self respecting woman would put up with this, but maybe I'm the one in the wrong. I love him dearly and don't want to leave and I know his intentions are well, but I don't feel this is right. All my friends of course are biased in my favor, I just wanted to hear what strangers would think.