Lying to my friends about meeting up with my ex

Okay this is a bit of a weird scenario and I’m getting kind of annoyed with everything. Here is some backstory and context before we get into things. I just graduated college, and I live in a house with 3 of my close friends. We’ve lived together for over a year now and this is our second house. I’d consider them to be some of my best friends. Another bit of context, I have an ex boyfriend that was my first serious boyfriend. We had a pretty bad breakup and I was depressed for awhile and it took a long time for me to move on. Towards the end of the relationship, both of us were pretty mean to each other and it was ugly.

Okay now to present day. I went through a different breakup recently (one that ended on great terms so I’m not too upset by it), and decided to get on dating apps for the first time in awhile. Later that night I check my texts and I see my ex, the one from the bad breakup, broke no contact of over a year to congratulate me on graduating. I was shocked and took awhile to respond, but I texted back a quick short “Thanks!” and moved on. He kept texting and asking how I was doing, which I decided to respond pretty shortly, but still polite. He told me saw me on dating apps and wanted to text me. I told my roommates he had actually reached out and they were all very annoyed with him and said I shouldn’t respond. I told them I sent like two texts but nothing after that.

However, that night, I found myself texting him more, and he apologized for his behavior from the breakup. I admit, it was nice to talk to him. We were friends for a few years before we ever dated, so it was like I was talking to an old friend I hadn’t heard from in awhile. He told me he wanted to meet up with me and see me. I was hesitant, because I have life360 with all of my roommates and they look at my location constantly (they’re just nosy) but agreed. A few days later, I told my roommates I was going to see a friend I had recently made, and went and saw my ex. And it was really great seeing him and I had a great time. We got dinner and caught up. I went to his place and met his new cat and then went home.

Since then, I’ve met with him 4 more times, and i’m enjoying myself. It’s nice to have him back in my life in just a friendly way. To be honest though, we are hooking up. He’s the best sex i’ve had and I wanted some good sex again, it’s been awhile for me. I told him we could still be friends and hang out, but I was interested in hooking up because I knew we were compatible. He agreed and we’ve slept together a few times and I don’t regret any of it. It’s just a friend I’m having mind blowing sex with.

However, I keep lying to my roommates about where I am, because I know they’d blow up and try and scold me like i’m not an adult who can make my own decisions. I’ve told other friends and they’ve let me know they think it’s a bad idea, but they let me live my life. The close friends I live with, however, would make a huge deal out of it and it would cause a big fight if I told them.

But i’m tired of sneaking around and lying about where I am because I’m an adult, I don’t understand why they have to always check my location like they’re my parents and quiz me about it later. Do I tell them the truth and risk it blowing up or keep this to myself?