C.Z.
Hi J.! It is my understanding that babies aren't too interested in other babies until they are toddlers or even a little older than toddlers. Usually. I think you're little baby probably prefers YOU to any other! When they are toddlers they enjoy other kids but only to the extent of simply being in the same room, they do what's called "parallel play". Which simply means playing alongside one another not really with one another. This is totally normal. I would never force a kid into a social situation they are not ready for. Seven months...it can wait.