Being burnt always sucks.
Both physically and emotionally.
Luckily, we have things like ov gloves to protect us from the physical kind of burning.
Sadly, nothing for the latter.
All you can really do is be honest with him and hope for the best.
Which it seems like you've done... or are at least trying to do.
Just keep it real with him.
And let him know that you're trying your best.
Communication is key.
At the same time, don't get forced into saying/doing anything you're not ready for.
If he likes you, he'll be understanding and sympathetic about it.
He should be willing to work with you.
If not, chop off his balls!
Sincerely,
Lorena