From experience I know sex the first time isn't always fun..... the lady is expectant, the guy is anxious... it happens to me. First time I come so quickly. I know this so what I do is make sure I engage in a lot of foreplay. I make sure she cums first and then I warn her no to expect so much from penetration today. In the end, she is happy (cos she is already satisfied) and feels guilty (cos she knows I am not) some of them are patient enough to wait and when I have an erection, business begins.
But in my opinion, great sex for a woman is not in the trusting. It's how you make her body respond and that includes the use of words, hands, tongues and the dick...
You said it yourself, you were open. Upfront market that's it. So why carry a banana and tell me you got a cassava? You have the strength of a goat but boast it's that of a tiger. That's the point exactly.
Now back to the topic which you have failed to address. It reminded me of a story.
My little brother and his friends snuck out of the boarding house to go visit a brothel. They were virgins and one of their older friend told them the best way to get 'that' experience was with a pro.
He said each one of them went in and had their share of the honey pot and they all got back to school boasting. 7 days later they started experiencing different pains. He ran home and came to me. He told me everything. I had to take him to a friend and he was treated. He got crabs.
Do you know what he said? He said he did not enjoy it, that his dick was swimming in something and before he could register what was happening, he came. He was so ashamed because his friends told him the different level of enjoyment to expect. He came out and bragged to them. Not realising all the others too experienced what he did. They later confessed it was nonsense .
So my dear virgin, take the time to explore. When it comes, try to be yourself. There's no laid down rules about it for a beginner. Just like old wine, you'll taste better with time.