As guys we have a lot of social pressure when it comes to sexual encounters or relationships.
Questions like,
how long should I last?
how big is my penis?
Is she going to come?
Am I a good sexual partner?
Have the potential to either makes us ejaculate quickly or not ejaculate at all, I am pretty sure that most men experience both scenarios. There is nothing wrong with him, and this has nothing to do with you! So don't worry too much about it, if you want to pursue the relationship try to make him relax , try to boost his confidence, and the situation should improve with time and practice.