Age difference/ Mom/ Help advice

Okay long story short a coworker and I well we’ve been talking for a month and 2 weeks and he’s 27 years old and I’m 19 years old. We both like each other a lot and well we already had sex a couple of times. My mom doesn’t know I had sex and she doesn’t know I’m seeing my coworker we’ll call “J” I don’t plan too tell her about the sex ever. But last week I did ask her if I could go out with J to eat and she said yes. Anyways the next day I told my mom that J and I are friends and nothing more. Which is literally a lie, I only told her that we kissed and that he’s 27 years old and well she kind of flipped because I was kind of trying to tell her that would it be cool if I dated him and she said no because he’s older than me and he only wants one thing which is sex but J and I have talked about it many times and he told me that his intentions aren’t about sex, he doesn’t want to hurt me. Anyways my mom was telling me how he should see women his age and not me because I’m still technically a kid, which yeah I could understand but I honestly think I’m mature for my age, but anyways, my mom was telling me she doesn’t want me doing the same mistake she did, my parents are 14 years apart, she doesn’t want me to lose my focus on school and fall pregnant and not continue my education, however, J is really on top, he’s always making sure I’m putting school as my priority, then he makes plans with me. J did not finish college he works two jobs. Anyways J texted me tonight, I’ll show you the screenshot

Anyways so I plan on talking to J in person tomorrow and see what he wants, if he wants to make this worth it in the long run and if does I’ll tell him that maybe we should sit down with my mom and talk things out with her.