Sirs, I Brief My Problem Here...Myseld And My Phiance Had

Sirs,

I brief my problem here...Myseld and my phiance had met each other and we decided for sex.Everything was going on well..and as a beginer i felt i was doing good.Good erection and she was enjoying a lot.and me too..When she was high..she asked to insert my penis.There starts my problem..I was unable to do it and dont know y.Later we discussed and concluded that since itbis first time for both of us.hence we dont know how to do it.After that we met five times but all those were unsuccessfull.She is very unhapy in this.Sir.we love each other and we are going to live together.So I introspect myself and found that my penis during romance activities like kissing etc will be erected and during insertion it is not proper and come back to normal size..Hence it is not getting properly..Apart from this nothing else..So sir please help me here and suggest me ..I love her a lot..and dont want to miss her..please help me sir..