Hahaha, unlike you, I hate love triangles! XD Not because they're inherently bad, but because they are so often very, very badly done. I've read too many bad ones, so I've kind of developed an allergy!
Now, for things I like:
Opposites. I don't mean people who dislike each other slowly learning to love each other (though that can be fun too) - I mean people who are opposites in some way - maybe someone bubbly and upbeat meeting someone quiet and introverted; maybe someone very tall falling for someone very short, etc., - who come together slowly, fitting their odd angles together.
People with legitimate issues that aren't magically cured of them by love. People who are a little bit beat up and strange - people with trust issues, people with OCD, people struggling with depression or anxiety, who aren't magically better just because they fell in love with someone who loves them back - but who, maybe, finds the support and motivation they need to keep getting better. Love is not a cure-all, but it can be a big help!
Friends falling in love. Bickering is fun, but so are friendships, and friendships are a healthy basis for any relationship!
People who aren't blushy teenagers falling in love. While a highschool romance with lots of blushing and awkward dates and whatnot is cute too, I really like to see people of ALL ages falling in love! Middle aged people, old people, etc. etc.
... And when I'm in the mood for it, romances you just KNOW are a bad idea. Not the rape-means-love or the they-hit-me-because-they-love me kind - just the kind of romance where two people fall in love and you just KNOW it's going to go down in flames. Like, say, a duty-bound officer of the law falling in love with a career criminal. Or maybe enemies on opposite sides in a war. People who circumstance WILL pit against each other in a conflict that cannot be resolved, and it's just going to break your dang heart when it happens.
... I like having my heart broken, if it's done really, really well. Hit me where it hurts, fiction.