Giving head

Ok so my boyfriend and I have been together for awhile and we have done more with him then anyone I have ever been with. I'm in the older teen years and I really haven't wanted to do anything with anyone else before so I didn't. I met him and ever since we've been together me makes me crazy. I was a little scared about new things and giving head is one but it's not about the action that scared me a little it's how he will taste. I'm more than curious and I definitely want to give him head. He has asked me many time and I told him no but the next time I didn't and I started to give him head but I got in my head and stopped. I felt terrible about it and it's been awhile since then. I talked to him about it and he felt bad that I felt bad. I've gotten past the part of being scared I guess you could say I'm curious about what he will taste like. Is there anything that you could compare the taste to I'm just curious.