Is he really nice........ or do i love him blindly ?

he is nice to me.... gets jealous when i talk with other guys.... but recently one of his friends whom i heartily dislike misbehaved with me ( sort of ) but whn i tld my bf, he got angry on me and is normal with his friend !! he does not gives me much time.... he never misses me too :( but he supports me through my tough times... he is not romantic. he check outs other gals sometimes.... he never sacrifices for me....... he goes out of his way at times to help me. help !!!!!