What to do? Dating a couple?

Hi everyone! This is a throwaway account, I need some advice and was wondering if anyone could give me some insight? I am currently a single guy, been trying to find a nice guy to date and be able to have fun with but someone I can see myself investing time into, if that makes sense? It's a lot to ask for apparently in the dating pool, so I've come up with pretty few dateable men. So fast forward to a few months ago, I made a friend on Grindr whose in an open relationship. They own a business together, built and designed their own house and have 3 puppers! Pretty soon I started hooking up with both of them at their house, just casual coming over for dinner and then fooling around for a little bit. They're super nice and haven't pressured me into anything I didn't want to do. So here's the question, and first off I tend to overthink things all the time so maybe it's just me confusing myself! I think of myself as kind of a romantic so I still am kind of looking for a boyfriend or a partner, should I keep hooking up with this couple? I like them a lot as friends and I enjoy hooking up with them, I am just a little confused. I grew up in a pretty white suburban monogamous Hetero house so this is new for me and I feel like I don't have many references to look at. I'm sorry if this came out too long, I felt like I had to explain myself :P if you've made it to the end congrats! Do you have any advice? TL:DR ; single guy sleeping with a nice gay couple. Do I hook up with them for now, or look for a boyfriend?