Is it a bad sign, or am I just paranoid?

I (20yr old female) have been dating my boyfriend (21yr old) for a little over a month. Since we're both full-time employees, we only see each other on the weekends. I like him a lot, and he tells me the same, but we only go out to fast food whenever we go out. I wanted to ask him about it, but before I could, he complained about the money spent at a Korean bbq place we went to, which was $50. After that, I had him pick the places to eat since I felt terrible about him complaining, but we always went to fast food. I know he makes enough (about $4k a month), but he also owns his own home (yes, a home, not an apartment). Maybe I'm asking for too much since he pays for other things plus gas commuting ( we switch on commuting since we live an hour from each other). I want to go out to more restaurants, but I don't think he wants to; we were looking for places to eat nearby on google maps, and he blew off the idea of going to a restaurant. Is this a bad sign, or am I just being paranoid?

P. S. we've only been out to one restaurant, and that was on our first date.
Is it a bad sign, or am I just paranoid?
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