Is dis love or we r just frnZ ?? ?

i think i love my best frnd. But i am not sure . So guys i need your help . I met him 5 months back. Now its like i am so much addictd to him. I dnt feel lik going college without him. He never says no to me for anythng. He always make me feel special by giftin me chocolates by puttin them in my bag n surprising me..He teases me a lot and when i am upset he do funny and stupid things to make me happy. He once asked me do u want me to be your bf?? Infact many times he askd me dis ques.bt i neva replied. Dunno why. Both of us r vry close (i mean we r in a physical relatn)...i mean vry attachd to hm..n i dnt wanna lose him.bt there is a twist in dis story he was in a relatnshp wid a gal who was his best frnd bt nw dey r nt together bt stil share sum feelings. I knw dis coz i read sum of his msgs...wat shd i do..shd i keep sum distance 4rm him...? Do i lov him? N wat about him? He loves me or not n if not so why he came so close to me??