Im in love with another man other than my bf

I ve been dating this guy for 2 and half years,he's amazing, he's crazy about me but I'm not crazy about him,he doesn't mk my hrt skip,but last month i met a guy DT doesn't just skip my heart but drives me crazy,I'm soo crazy abt him,he hasn't askd me out but we are quite intimate, no sex though,but it hurts me to think of letting go of my bf cos he's soo in love with me,and I dnt wnt to hurt him,BT I feel alive when I'm with d oda guy,he's soo cute and acts responsible, I'm soo confused, pls help