My(19m) girlfriend(18f) said her ex is the only guy that can satisfy her sexually

I have been dating my gf(18f) for a little over 2 years now. We both have been each other’s first and we have been sexually active after 1 year of dating. We have been great all this time. I love her more than anything and I would do anything for her. However she told me something that hurt me a lot. She told me that her ex before me was cheating on her and that’s how they broke up but the only thing she regrets is losing the guy who could satisfy her sexually the most. I have tried various things to change it but nothing seems to work. I still feel like I don’t satisfy her needs. She told me it doesn’t matter she is happy with me and she loves me but I can’t seem to get the satisfaction part out of mind. What can I do to satisfy her sexual needs as well? But please don’t be rude and harsh on me because I know I just need advice.<br><br>Tldr My gf said I can’t satisfy her sexually like her ex did and I want to know what I can do to satisfy her sexually.