I’m so scared 😢

I’ve been with my boyfriend for 4 years now we live about 40 minutes away and get to see eachother every other weekend so 2 weeks and recently I’ve noticed that I don’t get super super depressed when he leaves anymore I used to breakdown into tears, not eat, seclude myself from everyone other than him I mean I’m not happy when he leaves but I don’t have that sinking feeling that he’s gone now, I love him more than anything he’s my bestfriend and I couldn’t picture my life without him, he’s 20 and I’m 19 btw. I looked it up on line which is probably one of the worst things to do and a couple people said that your not in love anymore if you don’t feel empty without them and it’s really scaring me bc when I think of leaving him all I want to do is cry..😔