My girlfriend (42yo) and I (43yo) are together for almost 4 years. We live an hour away from each other and, as our respective kids are going to school at our respective place, where our exes also live. It is then impossible for us to live together, all 7 ( she has 3 kids, I have 2). Basically, we live one week away, with our kids, one week together.
She recently bought a house and asked a guy she knew from before (a friend of her ex) some advices about the construction. This guy has a heavy past : he left his wife for a woman looking like my girlfriend (same type of person), then broke up and wanted to go back with his wife, but she did not wanted him back. He went back in touch with my girlfriend and started to explain her that he feels very bad because he is alone. He admitted that he had always liked her, even when she was with her ex.
Then he started to date many girls (thank you Tinder), and kept telling her how good sex he had, then how much he is in love with the girl, then finally how sad he is because de relationship is not going like he would like and then he drops the girls and find another one. In the mean time he is so depressed because his ex-wife has a new boy friend and he pretends to be in love with her. Well, back to my problem, they really text each other those last time, at any time of the day, sometimes very late or early. He always shows up. When she tells him we go out somewhere, he is there too.
It got worst the last week when he came to her place one evening I wasn’t there, with his daughter, and they had fun lol together. Then even the daughter now is texting every other week to ask what they are doing.
We had many argument my girlfriend and I about this behavior and she minimizes their relationships. But today, as I am home with my kids, I realized he is there (thank tosmart doorbell), but she did not tell me. I texted her but . We texted tonight and she told me about her daughter friend being there, but nothing about the guy. She even sent me a picture of her daughter and the dog watching tv… but no mention of the guy. What should I do?