Should I leave my current relationship?

So I’m a single teen mommy. I met this guy when my son was 5 months old he’s the only dad my son has ever known. And he’s a good dad. He’s a good guy he’s human too. But we’re 3 months away from our 1 year anniversary and so many people have told me to leave him. We’ve Been through a lot. We miscarried two babies together, he flirted with two girls over text (after we lost the babies I think it was his weird way of grieving) and we’ve basically been through a lot of stuff because of our families are crazy and manipulative. We really love each other and all. But lately I’ve felt like I’ve been having to beg him to come hang out with us. I will admit I have been kind of extra emotional lately and maybe that is why he is keeping his distance but Idk. A few red flags have happened through out this year but I figured I’d ask y’all. What you think?

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