My sister in law is a very outgoing, sociable, domineering and egotistical person. She tends to dominate social events and it's all about her. She met an old school friend of mine while away with work and took a real shine to him. He works abroad and comes home infrequently. When he does, a few of his old friends like to meet up and just have a laugh about old times and catch up with how he is etc. When he was back at Easter, my sister in law was really eager to see him and persisted until he agreed to a meet up. They are only really acquaintances to be honest but she seems to think he will want to spend time with her over his own family and friends (he already really struggles to catch up with everyone). My point is that at Easter I had to tell my friend to agree to a meeting (she just wouldn't let it lie) and this ended up being a night out we'd organised. True to form my sis in law dominated the conversation and it was a much different night as a result. I don't like leaving people out but at the same time I just know she will 'gatecrash' the meet up in summer. My husband told me we will just have to invite her unless we want World War 3. AIBU in wanting to keep the friendship meet ups just between the old mates who've known each other for so long?
For info: she is happily dating and has lots of friends of her own. My friend is gay.