<human>: There's something I've noticed about myself in relationships/life and it's stared to really concern me lately. I had my first boyfriend when I was 16 and ever since then I have jumped from relationship to relationship.  I've never cheated but I find that I have trouble being emotionally invested in my partners and after the initial lust fades, I get bored and find myself essentially waiting for someone else to come along.

I have had multiple long term relationships, one for 2 years, one on and off for 3 years, and my current one which is approaching 2.5 years.  My current boyfriend and I have been living together for a year , and objectively everything is perfect.  We cohabitate well, don't get jealous or controlling, our values align, our sex life is great.  I just can't help feeling that it's only a matter of time until this relationship ends the same way there others did.  He is a great partner, but I'm just not sure if what I feel for him is love.  I'm not sure I've ever felt love in any of my relationships.  When I ended them, I always felt relief, not sadness and always moved on very quickly.

My current boyfriend had been hinting at a proposal soon, and I am just not sure if I will be happy in 10 years or if the same pattern will continue.  Have I just not met  the right person, or is there something fundamentally wrong with me that makes me incapable of love?  Help!!

Can you condense the text into three sentences or less?
<bot>: Not sure if I am incapable of love or just haven't met the right person.  Current relationship is getting serious and I'm not sure if I'm settling.