We've been together for 3 years, usually don't argue about anything and everything has been great up until recently. Some time ago she started getting these thoughts in her head that would drive her insane and ultimately put her in terrible moods. I got her to spill out what these thoughts were and main gist of it was, "is this the right guy for me?", "do I want to spend the rest of my life with him?","you're only young and pretty once, how do I know he's the right one?", "I'll never get into nursing school", "I'm sick of my job". I could tell when she was going through this because she treated me different, and I could see that she was down about things. So I would talk sense into her and get her to calm down, and she went back to being herself again. Now this week she must of had a mental nuke and called me over Monday saying we should take a break so she could figure this out on her own. I had lunch with her today and she claims her mind is wanting to go in two directions. Either end the relationship to clear her of these thoughts....or that she loves me and doesn't want to screw up a great thing She claims she still loves me and I love her greatly, but i'm not sure she'll be able to convince her mind of this. I just don't know what to do, I can't bear losing her. What do you guys think is going on here, or what I should do?