How do you know if your in love ?

I haven’t been with my man for that long but I’ve known from the first date I was falling I love with him and it’s been littles less then two months of dating ( I’ve known him for 7 months) and whenever I’m with him I’ll just be listening to him talk or looking at him or really anything and all I think is man I love you like sometime I’m so scared I’m just gonna say it when I’m thinking it one day and I’m high key nervous about that