I don't orgasm during sex

Aliza
My boyfriend and I have been together for 2 years and have been living together for a little less. I have yet to orgasm during sex with him.
​On a few occasions I have told him that I reached an O to keep from offending him or hurting his ego. I am sure that if I am open with him about this that we can attempt to work it out together but... I am afraid he will be angry with me for lying/insecure about his abilities to please me. I love him and don't want to hurt him. Any suggestions on how to approach this situation?
​Also, I am 22 and he is 35. I'm not sure if the age gap has anything to do with it...