Guy's Behavior

Sneaky link says I love you?

For background, this guy and I met last year. He (23) is in school right now, I (25) am graduated and working. We went on a few dates and after a few, we hooked up. Ever since then, we began to only hook up which I was fine with since I had gotten out of a relationship and wanted something casual. Usually, he’ll text, I’ll go over, we hook up/talk, and a couple hours later I’m back home. Once in awhile, we smoke or get tacos/ice creams, or maybe hit the store but not a lot. (Take turns for paying for those) Definitely been more confused now.
We generally Snapchat everyday either random pics or convos, or send tik toks through text, or random tweets. He likes to call me often, especially the past few months randomly to talk, tease, etc. Sometimes, he’ll joke around about if I asked him to go out or do something, or sometimes say I’m his wife. He’s definitely funny, cute, fun-witty argumentative, and has his moments. But he also can be immature, impatient, and sometimes self-centered.
The past month, he started to hang up his phone calls saying “I love you.” I’ve never said it back and it’s confused me. How can he say that when we’re not dating/exclusive, he doesn’t take me out, buy flowers any sort of effort etc, and yes we talk but not super deep? He’s asked me why I haven’t said it back and I’ve sorta brushed it off.
Now though, I’m open to a finding a serious relationship. However, he’s young, not close to settled, and with how the generation is I wonder if this is just how a “situationship” is in his eyes. Just hooking up yet having random relationship qualities.
Does it seem from an offside perspective that he’s immature and I should break things off in hopes to find a more serious dependable thing?
Or ask his intentions/future considerations w me? I just considered the l-word as a big thing and have felt weird.

Sneaky link says I love you?
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