Only text on Snapchat

My boyfriend and I have been together for a year and we only text on Snapchat. I would say 99% of our conversations happen on Snapchat. We have each other’s numbers of course but just ended up talking on Snapchat instead. Is that weird? Neither of us have a problem with it but just thought about it and wanted to ask other’s opinions.

Edit: he doesn’t have another girlfriend we live together and he saves all of our messages lol, they don’t get deleted.