My bf & his ex have been separated for 2 years-no final divorce has been established.She still sends him love txts & wants to get back with him yet she has a boyfriend. My bf thinks I'm being immature by not wanting him to attend a joint bday party for their son. He didn't tell me about this party until the night before I announced to him that my plans were to spend the following day alone with him. Not only did he go, but he didn't invite me and after the fact he said I should have come. I don't feel comfortable around her after the txts she sends him and I don't think a joint party is reasonable for a child when there is drama and tension all around. Am I in the wrong?