What do u do when u got a cheater?

ok so my boyfriend and i have been together for 7 years. And his love is undesirable. Ya you know what i mean. one day i got the feeling that he was cheating on me. But my mother was like no no no he is not that type of person but i knew he was. mY mother knew that ive been hurt before she said he is my everything and we make a good couple. So one day i wanted to go to a favorite restaurant of ours oh but come to find out he bump into his ex. he was like its been a while. Yeah it has been a while. Then he tried to introduce me to her but i stopped him when he got to this is my... She oh yeah this is the chick you always talked about. Then i got confused. How in the hell she known bout me its been a while since they talked right is it just me or this ***** been with with my man. So i went to the lady's room. I had an ike feeling..to be continued