As others have mentioned, or at least hinted at, I think you two need to sit down and have a conversation about what your ideal would be vs what's realistic.
Searching around, here or anywhere, you'll find quite a lot of discussion around this topic. It's very rare that you get even two people clicking, let alone 3 or more. Setting that up as an expectation is sabotage right from the start.
I think you two should acknowledge this right now. As Geezer mentioned, you never know which way the winds of change may blow. I've seen more than one relationship where the initial chemistry was only lukewarm in the beginning but grew over time as people really got to know each other on a deeper level.
But even beyond that hope, it's just more reasonable to allow room for each other to have deeper loves while the other is more on a friendship level. That's NOT a source of conflict - unless you make it so.
Think it over............