Is it normal that i want to have sex with my neighbor again?

So one day i was at home it was 2 days after my birthday and less than 24 hours since the day i was ovulating . Im in bed and i hear a knock on my room sliding door. I ignore it then it happens again and i look outside to see my neighbor (we'll call him Carl) carl outside . I open the door and he asks for a light then after i gave it to him he asks if my dad was sleep and he was then i ask carl if i can smoke with him and he says yes.we smoke and out of no where he walks in my room and starts watching t.v i seen no harm in it till i turn back to go inside and he pulls me close to him and starts to kiss on my neck then kiss me.long story short he fucked me and came inside of me.......i now want him so bad but he has a girlfriend and his girlfriend has 3 kids but none are his. Hes 21 shes in her 30s .....he even has her name on his chest but he choose me .......I DONT KNOW