My boyfriend and I can’t have sex

Patient: My boyfriend and I have tried to have sex on several occasions. We have lots of foreplay and there is a little lubrication when that is going on. However when he gets ready to penetrate he can’t because I’m dry. I’m a virgin and he is not, so he knows what he is doing. But everytime we try and fail it upsets me loads because I love him very much and I feel ready. Please can you give me any advice. I’ve read somewhere that using tampons doesn’t help this is this true.

Symptoms: Vaginal dryness