Aibu to think that this is weird/strange?
A young couple in their early 20s. Dated for a year then split up. No children together, no mutual friends. Never lived together.
One half of the couple moved to another city, meets someone else and moves in with them. This person has had lots of different relationships but has started a new life, new job, new friends.
The other person still in the home city continues to regularly visit the exes parents. Even going round for drinks on Christmas Day. Gives Christmas and birthday presents to the exes parents and extended family. Then meets someone else and continues to spend Christmas Day with exes parents and their new partner, tags along to family occasions and parties with the exes parents.
People don't normally do this right? No children involved. What would you think to this?