Feeling guilty...

So I’ve started dating this guy. He’s really sweet and everything. We got comfortable to each other and he tells me every secret of his. Last night, he asked me if I ever gave a blowjob before, and I was too ashamed to admit that I did... so I said I didn’t. I’m only 18 and I really like him and I wanted to make a good impression. I feel really bad for lying and I feel like if I tell him now, he wouldn’t trust me anymore. And he also, asked me if I was comfortable giving him a blood job and I said we could try it...