We met as freshmen in college. I was dating someone who lived on DH’s floor. BF was very insecure and kept going to DH for advice (and telling me what DH had told him). By mutual agreement we broke up after about 6 weeks. DH asked the ex if he wouldn’t mind if he asked me out. He said he would be fine with it (he wasn’t), so I started dating DH. We didn’t get married for almost 7 years after we started dating (after grad/professional school).
P.S. Ex did eventually get over it and to this day is still one of our closest friends.