Does he actually love me or its jst my fear?

there's a guy my frnd 's boyfrnd workd with him fr a mnth in a company n through his id v met online n talkd a lot bt d first tym i talkd to him on phone v talkd for4 hrs n then he sudennly startd talking a lil like phone sex..... i hung up, fr dat he apologised later now v've been talking fr 2 weeks che seems to b vry caring, i m so attacthchd to him bt nw he's again cumin on d same track..... i luv him bt i m confused does he actually love me or jst needs me , he's 7 yrs elder to me( im 21 , he's 28) prsntly he's outside d country bt'll come bak in 2-3 mnths, he 's d first guy who's more than a frnd to me, so wen he starts talkin lyk dat( about sex) i get l'il afraid, n he thinks i m nt intrested n jst playing with him..... i'm stuck in between ...... plz tell is dis love, i'm not as comfortable as i should b bt i cant also leave him.... wat do i do?