I've been dating this girl I've met on Tinder for 4 months now. I'm 32 and she is 33 and we had a pretty good time so far with some arguments here and there. I've went through some rough time this year like another breakup and lost a job (that I hate but still) and her warmth and nurture is something I really enjoy. She likes to cook and clean, has a good job, we have a good sex etc. She isn't a beauty but she is cute to me. She also told me that she love me and that she wants family and all with me.

So here is the issue. From the start I wanted us to be honest about everything and that also includes number of partners. I was completely honest with her and was expecting the same from her. So she told me that she had 5 sexual partners all from the relationships and that she never had sex if she wasn't dating someone. So I asked her this question many times because I always felt like she wasn't telling me the truth but she would always say to me that it was the truth. So few days ago we had an argument on another topic and this also came up and I asked her the same question and she gave me the same answer. Then I asked her to swore on her nephew that she loves and she said that actually there was another guy that she met on Tinder and had sex. And I asked her again if that was the truth and she said yes that is all. Fast forward 10 minutes and she tells me that actually there were 4 guys in total that she met on Tinder and had sex without being in a relationship. So in total, as of now, she slept with 9 guys. I was so fucking angry and betrayed that I just left after some yelling. Next few days when she wanted to speak I would tell her horrible things and insults mainly because she was lying to me this whole time and painting a picture of her that is not true.

So I want to ask for your opinion on all of this and what would you do in this situation. I don't know what hurts me more, the fact that she lied to me all this time about something that she knows is important to me or the fact that now I have these thoughts in my head about some random fucking dudes fucking her, every time I think of her.