Is he stringing me along, or just taking his time?

We are both in our mid 30s, going to grad schools in cities about 30-40 minutes apart. We met on an app. We've been dating for 2 months. Having trouble gauging what this is for him; we have made out, but I openly said I wouldn't sleep with him until I knew him better. I don't know if that makes a difference.

Things that make me think he is not serious:

- Takes hours to respond to texts (when he used to reply promptly within 1-3). Does not call or facetime. No longer says goodnight or good morning routinely,

- We only hang out once per week. I would think if you liked someone you would increase that no?

- Has never defined what we are, discussed relationship goals, exclusivity or asked if I am still on the app

Things that make me think he is serious but taking his time:

- He has invited me to a happy hour to introduce me to his brother, just the 3 of us

- We hang out every week, once a week; he asks in advance. Mix of hanging out at one of our places, or doing activities or dinner. Very affectionate and never checks his phone when we are together.

Just feels like we are reaching a plateau, rather than him asking to hang out more frequently, text more frequently or get off the app. I really like him and am terrified of getting hurt.

Is he stringing me along, or just taking his time?
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