I(F 21) lied to my bf(F 21) and I feel guilty, very very guilty, what can be done?

I love him, he hasn’t found out about any of these but ill begin I lied about only two things one my them is telling him I’m a from a different school level I accidentally slipped out a different level when I joined the place and went along with it.ni never told him im from a different level he just assumed and I went along with it ik this is an excuse and there’s no one guilty but me but I wish I could tell him I don’t have the courage to I don’t want him to see me in a different light and the second thing I lied about isn’t that great too I told him I had romance with ppl before so I don’t look unwanted and unloved I made up a character and told him he loved me a lot so my bf feels like I was loved before and not an outcast