HELP! I'm Confused, Not Sure He Loves Me

                Hi, I love ur blog and I have watched u help others with their problems, pls I would love u to assist me with mine...am a 21yr old Lady, I have had dis guy as my bestfriend for over 5yrs now and I must confess I av bin secretly in love with him for as long as I can remember, My boyfrnds in d past always complained about our closeness but I always hid d love part from dem...

Well I saw dis my bestfrnd recently and he kissed me and said he loved me...I was delighted but after that he started acting strange, not talking and posting pics of him with other gals...
Should I hold on or move on?? I really do love him but it hurts to cos he's living his life with other chicks but occasionally calls to say he still loves me..what should I do?? 
Pls I need d advice of ur faithful readers...Thanks