Romance 101
There's a fine line between too much and too little romance. You have to hit that line. Where that line is on the scale of no romance to lots of romance depends on your novel. If you're writing a romance novel, you're likely to have much more romance. If you're writing a sci-fi novel, you're probably going to have considerably less romance.
Love triangles are very overused, but they are great for your novel. However, try to make your love triangle a bit different than the rest (ex. Suzanne Collins's The Hunger Games- Gale loves Katniss, Peeta loves Katniss, but most likely both Katniss and Peeta are going to die.)
Make your romance electric. Make it sharp and focused when your characters kiss. If you're going with the love triangle, make it confusing for the person the other two are fighting over. Maybe the main character at the center of the love triangle doesn't realize that the other person loves them. Maybe they do and don't care. Or better yet, they do and they do care, but they just don't love that one person chasing after them. Make it complex, with many more sides than just three.
Love triangles are very overused, but they are great for your novel. However, try to make your love triangle a bit different than the rest (ex. Suzanne Collins's The Hunger Games- Gale loves Katniss, Peeta loves Katniss, but most likely both Katniss and Peeta are going to die.)
Make your romance electric. Make it sharp and focused when your characters kiss. If you're going with the love triangle, make it confusing for the person the other two are fighting over. Maybe the main character at the center of the love triangle doesn't realize that the other person loves them. Maybe they do and don't care. Or better yet, they do and they do care, but they just don't love that one person chasing after them. Make it complex, with many more sides than just three.