<human>: Give me the gist of the text in a nutshell

I'm in a long distance relationship with my SO and it's been 2 years. We still see each other every few months and video chat almost everyday. We knew each other for 5 years beforehand and I'm at a point where if someone said to me "You can never talk to her" I don't know if I would be all that heart broken. 

The catch is that she loves me more than any of my past GF's combined. Also, we will each make 6 figure incomes next year (we both are graduating with professional degrees and have landed a position in our respective fields). In the long-term, I know that we will/should live comfortably. 

With that said, should I keep in mind of the future and maintain this  relationship and a possible marriage? I'm not unattracted to her but I'm not attracted to her either. I'm more indifferent. There's definitely girls that I AM attracted to.

Lastly, another big concern is that she can be very unpredictable at times (ie. being happy at a 10/10 today and super stressed and annoyed at a 1/10 tomorrow. This will lead to ignoring texts, calls, etc because she is stressed.). I'm not sure if I can live with such unpredictability and worry about how she's going to treat me the rest of her life. I will say she is generally more stressed about things whereas I just let things fall and go with the flow. 

Any redditors with similar experiences that could offer me some advice?
<bot>: Been dating for 2 years, knew each other for 5. Feel comfortable with the relationship but don't feel like I'm in "love." What to do?