One lie made my sex life so great. Wondering if it's wrong and I should tell her

My girlfriend knows I've been computer nerd from childhood and didn't even had a girlfriend in my highschool cause I was always focused in just coding. She was my first time of everything and I love her very much. When we were intimate for the first time, I just messed so many things up, fell from bed, hurt my elbow and so many embarrassing things happened but she found that cute.

As I was always focused in computers, my girlfriend always thought I had low libido and just not interested in sex as much as others but that is far from true. I'm pretty sure I have higher libido than her, like I'm crazy about it. Whenever I was not coding, I most of the time was thinking about it but never told my girlfriend that time.

She just asked me the reason I never had girlfriend in school & was virgin was if I had low libido, I didn't knew what to say and I just nodded. She said "Alright, okay, do you think I'm beautiful? Sexy enough for you?". She is the most beautiful girl I have seen after college and I just said yes loudly thinking this maybe the starting of ending of a relationship and I was scared.

She just said "I believe I can change you, be ready for tonight". I regret saying no that time cause I had high libido and it was just starting of our relationship and just a month so I don't want to look like I was just with her for sex.

Then later that night after dinner when we were just about to sleep, she just started talking dirty to me which I was loving but was too shy to say anything and just returning with yes or no. She then just start putting her hands and tired touching my neck and chest and OMG that was so cute!!! I am pretty sure she read to do this on internet or some friend suggested her thinking it would seduce me but the reality is the moment she spoke dirty with me, I was all hers.

After few seconds, I just jumped on her and that was one of the best night ever. Next day morning, she was just so happy and said "I'm just too sexy, you can't ignore". From that day, we at least have sex 3-4 times a week for straight 1 and half year. After coming from work, I just act exhausted and say we're not doing anything today. She just then tries to seduce me and I just give in easily but make it look like everything she does is the reason I was turned on and she loves that so much.

It's been more than 2 years since we've been together. We don't have sex that frequently and just cuddle and sleep most of the times in week but still, I can see the look on her face of that confidence. She just have been believing I have low libido and she's just master and just so sexy that she can easily seduce me. I'm gonna keep this up forever. I love it so much she tries and I give in, we both get different kind of thrill in that I guess.

Still it feels like I'm lying to her cause I just easily give in but she still feels it's cause of her moves she knows and could even make me turn on despite having low libido but the reality is I'm 9/10 times always interested in sex and her moves just doesn't work, I'm turned on just cause she's in the same room with me. The thing is, I'm always h*rny. Should I tell her or just keep the things as it is for me, we're both in 20s and I need someone who's lot mature if I should let things going like this or not? Nothing wrong but I sometime have this little feeling that I'm keeping her in lie.