My FI has a friend (former co-worker) that I just hate. They don't hang out at all (in all honesty, probably because of me), but they talk on the phone sometimes. I just hate the guy; every time I see him, he does something else to be horrible. If he's there, it's going to ruin my day. If he's not there, it's going to upset my FI. I've still got time to decide, but it's really stressing me out.