Already talking about leaving

I've been dating a man for about a month, and recently things have been getting more serious. neither of us are seeing anyone else, we have both been introduced to each others friends, he calls me often etc. And simultaneously, he has started talking about leaving. Not me specifically, but going to other countries to volunteer, or take courses, and even doing an epic journey by himself! There is no mention of wanting to do these things together. How do I take his flip flop behavior?

Am I too masculine?

I don't want to dumb myself down or pretend to be weaker than I am, but I want men to find me feminine and attractive. I want to experience the chivalry that seems to go away with competing in the professional world. What am I doing wrong!?