Telling parents about older boyfriend

Ok, I have been dating this guy for almost 4 months now, and I am truly happy and in love with him. My first issue, I haven’t told my parents about him. I’m sure they’d be thrilled for me to have a boyfriend again (I was with the same guy for 5 years, then was single for 3 years after we split), but the other thing is, he’s 20 years older than me. I’m 22, he’s 42. I haven’t had an issue with the age difference myself, but I have a pretty big feeling that my parents will have an issue with it. My boyfriend, even though he’s 42, doesn’t act or look or anything like he’s 42. He could seriously pass as maybe 35 (at the oldest). But I’m not for lying to my parents about his age at all. We are both ready to move our relationship forward and be able to be more open about it and not having to go behind my parents backs about it all the time. He loves to take trips occasionally and is always wanting me to go, but with having a mom who checks in just about every single day (I live an hour away from my parents), it makes it hard. I have had some friends tell me to just invite them to dinner and tell them I have a boyfriend and then see where things go from there. My only fear is that when they do find out his age is that they’ll try (even though I’m an adult) to “ban” or “refuse” me from seeing him. So, this poses my question to you out there…what’s the best way you’d suggest telling my parents about him? Any suggestions at all are welcome. Like I said, I’m very happy with him, and to me that’s all that should matter…right?