I've been dating a guy for 7 months and we've yet to establish a relationship. Technically, we've only been dating for a handful of months out of those 7:

End of December: our first 2 dates (guy #1)
Jan: I was seeing someone else, so I let him go despite what my gut told me. Didn't work out with guy #2, so I contacted him again and we just talked for all of Jan because he didn't trust me.
Feb-Mar: started going out again, seeing each other at least once a week
Beginning of April - Mid-April: Went out at least once a week up until mid-April because he was going out of state for internship.
Mid-April - Mid-July: Out of state for internship, but I did visit him for 2 days in May because I have another friend who lives in that state.
July 16th - Present: went out twice
July 26th - Aug 5th: He's going on vacation with his family
Aug 5th - Aug 19th: I'm going away

Despite this weird pattern of dating, we manage to text or call each other everyday. When we text, the conversations last from whenever they started up until bedtime. We have not had sex, but have done oral, which puts us in a FWB position, I guess. He tells his parents about me, but none of us has met each other's friends and family. My family doesn't even know he exists. I'm waiting until we become bf/gf before I tell them and he knows this.

So because of our weird pattern of always being away from each other, is it normal that we've not established a relationship yet?

You are FWB and as long as you stay that way there is no reason (in his way of thinking) for it to change.

The whole relationship is weird. You have not been around each other enough to have a relationship.