There's no harm in the relationship being strictly related to work, especially if that's what brought you two together in the first place and you found that you complement each other well. You help each other out, and you're able to have constructive debate, particularly if you both have different views on stuff or different outlooks. Those are all really healthy things.

If you want to try to build more of a personal connection, it's more about introducing small talk and banter into whatever frequency you guys meet (stand-ups, etc.). Learn a little bit about each other and what the other person's interested in. You may find common ground that you didn't know existed. For example, my co-founder and I both learned that we both really enjoy cooking.

At the end of the day, as long as it's strictly professional and focused on work, there's no harm in it. As long as you guys enjoy working together, are driven toward a common goal, and get joy out of the time that you do spend together, even if you're not going out and doing things together when you're not working.

I know, but for example we are working in person and it doesn't seem like he is interested in speaking to me lol. I make a lot of questions to sparkle some conversations, but there isn't really a conversation