BPD or immature?

[Herodias]

Has anyone ever expeirienced their ex with another pwBPD? I keep wondering if this new gf is one as well. She cheated on her husband with mine, twice- meaning two different times. She posts all kinds love statements on FB with him(her husband) until last Feb. Suddenly it stopped and after they were separated in May- she started love-bombing my husband all over it as well. So that's that quick shift to a new r/s. Before that I could tell my husband and her were seeing each other, due to her fb being open to the public! She was into everything he was suddenly. Hobbies, car types, dressing like him, they even had pink eye at the same time earlier in the year. So, I know they were starting to see each other, it just didn't come out until they were both legally separated. Now she love- bombs him all over fb and all her unknowing friends think it's so cute and sweet. What a perfect couple they say! Some of her fb friends are people he slept with and/or was sexting with! One of her friends is my sister's ex who is a serial cheater/ porn addict as well! These are low class people. They all work for the same company.  Even the girl in my bed on xmas has become her friend on Facebook recently when he did... .since I had made him take her off, I noticed the two of them became friends with her at the same time a couple months ago! This girl  knows about the domestic violence and the BPD, because when I called 911 that night, I said it to the operator for her to hear! She had told me she was going to stay away from him, that I had my hands full and didn't need to worry about her! Isn't that strange she is liking all the love-bombing statements this new gf is making of fb? For all I know she is still after him as well... .It's all so strange. Thats why I wonder if this new gf is BPD or just very immature at 26. She also is into tattoo's. She made a comment a year ago when she said how much she loved her husband on their anniversary, that he was her rock and how wonderful he was for putting up with her moods... .Now she is telling my husband he is her rock and how much she loves him. I swear, he has found another BPD... .I wonder how that works?