Is it normal to not want to hangout with the people you met while abroad?

Hey guys, I studied abroad in Spain for a month in summer. It was a group within my university and the people I met were quite interesting. I would say I’ve gotten somewhat close to them especially my roommates but I really have no desire to keep in touch like that. I feel like it was more of a situational thing and now that I’m back home they want to hang out in a group again. They’re all much older than me and I don’t really feel much a connection now that I’ve been home. I’m just wondering if this is normal? It’s like I’m content with the close friends I already had before but I also love meeting people.