long story short ... went out and slept with a first year uni student whose 19, and when she asked me how old i was i said i was 21 and in my third year, but i'm actually 22 and just graduated. Its a weird lie i know, but i thought it would help getting with her as she is only a first year. This girls keen on me and drunk messaged me wanting to hook up. I'm going to ask here out properly and get that plate spinning, but i don't know how to tell her my real age, without it being really awkward. If i text her saying i lied that's a bit weird. My only other thought was not telling her till we meet in person, so i can make an excuse in a more persuasive way.

What would you do? and how would you minimise awkwardness?

Also i told her i was 21 in the morning,so i cant lie and say i was drunk

And cant keep the lie going, as i have a job and it would be a lot of effort keeping it a secret