How do i feel?

i have been with my bf for three years, and i think i love him, the thing is i just dont know if i do or not. i think he is gawjus but there is no erflies wen i c him nemore, i dont know if this is normal, our life has wilted in the last year or so and we are lucky if we do it 1 time a week. we hardly ever seem to be alone and wen we r our relationship is a lil better. it feels ;like we are best friends who ocationally have . i still look at other guys and think they are good looking and sometimes even fancy them. but wen i think about loosing him i just want to cry coz it wood be the end of my world, im just not sure if its coz i love him or he is my friend. we have quite alot of rows but always make up afterwards without realy sorting anything out. he says he loves me and i believe him but i think he feels the same way i do. i have been with him since i turned 15 and was in a violent relationship before that he rescued me from.if i loved him woodnt i no 4 sure that i did?