boyfriend told me this... what do I say?

so i’ve noticed my boyfriend has been super distant lately and so I basically had to ask him like three times to get it out of him. he finally opened up thank god. he said

“i’ve been thinking a lot about us lately. I feel like we act more like friends than a couple except for the sex. and we’ve dated for 5 and a half months and half of that has been long distance”

the long distance thing is true and i hate it. I never really thought we acted more like friends than a couple tho. I never thought he liked the cheesy parts or PDA of a relationship so I guess I kinda held back on that.

idk what to say. I really really like (i’d even go as far as to say love) this guy and I want things to change so he’s happy. what do I say??