weird sister in law.

well brother-in-law girlfriend be acting funny towards my husband and his brother. few month ago she told her boyfriend that my husband looks way better then him. on Friday they went to a bar and my brother in law put her in the middle with him in one side and my husband in the other holding hands for me is weird I don't know if for ya.and I told him that there is something weird and lots of ignore. she likes talking to my husband alot telling him about her relationship with her boyfriend. what ya think ? am I exaggerating.