Bf falling in love? HELP

Lately my boyfriend has been acting more quiet/ kinda weird. At first I was suss but I know he would never do anything.

On a double date last weekend he was acting strange so I started to as well and he then kept asking why I was acting weird.

I asked if he was pissed at me and he said no just at work stuff.

We were about to have sex- kind grinding on him me on top. He then said I’m not pissed at you. He carried on and the said “I think I’m falling in love with you” this completely threw me off. I don’t know if I miss heard it, but it’s quiet distinct phrase? I was quiet and kinda said are you being serious and then I said “I think I’m falling in love with you too” and we carried on doing stuff. It was just a strange time and situation for it to be said.

1) do you think I misheard that? He didn’t react weirdly to me saying it back- we kinda just carried on. So I assume I heard correctly by his reaction to what I said??

He was also more communicative during sex after that (he usually isnt- very quiet most of the time)

2) do you think he means it and that’s why he was acting weird? I really do love him. We have been seeing each other since March but properly dating for 2 months.