Hi, sweetpea, welcome!

I dated/lived with my husband 5 years before his divorce was final and one thing I did was watch very carefully how he treated his mother, my mother, his ex-wife, myself, women co-workers, etc. He passed with flying colors.

I don't see your boyfriend treating anyone well, much less yourself whom he should "cherish" (my husband's favorite word toward me). I know I'm only getting your side of the story but the whole time I was reading it I kept wondering, "and why is she engaged to this man?" I didn't see anything to endear him to anybody (except your siblings who want whom they think will be a free lawyer but I imagine he'll probably either wimp out on them or charge them an arm and a leg for his services). I would leave them and reclaim yourself.