accidental physical contact

Was what we did a sex act?

lolo18
asks:
I'm a 14 year old girl and I hang out with my neighbor a lot (he's a guy) and one day we were at his house in the pool and we accidentally "rubbed" our bodies together and he got an erection. Was what we did a sex act? We still hang out and stuff but it hasn't been we kinda have that sexual tension between us now....