Less and less sex

It's my first serious and long relationship with a guy and the first month's we were always over each other😅

Horny pretty much all the time lol

Now it has been a month that we don't really feel to have sex...before it was impossible to not have sex in the night.

Now we can just hug and just sleep then XD

Don't know what it means, maybe it's stupid but I thought I was less interested in him...then we talked and he said : yeah it's just because it's getting serious between us.

Is it the case for all relationships in general??🤷

My feelings are the same but I just don't feel the excitement I was feeling before with him...