please i need an advice

my boyfriend is 28 and i am 22,his from nigeria and am from another african country.However, i met this man at scool his an internation student and am not he goes clubbing while there he collect girls number and add tham on fb and later he will come to me and tell me about the girl or if he goes out beside clubbing he does the same thing collect number he text girls we have fight about it and he would say i mean a lot to him this and that he cook, cleans and his a great guy. i use to go clubbing but i stop before i met him , i read am email his friend was asking him why he does take me he said he want to enjoy life at that age. well not that i am objecting him from clubbing but why collect number i know for a fact that if i show my ugly side he would not like it please how can i handel this man he goes with friend that are seeking girlfriend and i am very sure if those guys have girlfriend they would not club i know oversea can be very borading at times but this man is really getting understand my skin and i am totally slowly losing trust on him.
help!!