Confused feelings

Do you ever have this one guy who you’ve been in love with for ages and you finally get him and he’s yours and you think that he’s all that you will ever want. He doesn’t treat you the best and he has cheated before but you forgive him because you love him, don’t you? but then someone new walks into your life, not better looking but a better person. Not the type you go for but yet everything you didn’t know you wanted? All your feelings get tangled in this triangle on how to love. You know this new person would treat you better, would take care of you, would love you better. But how do you walk away from a relationship that you have worked so hard on to get. But yet again how do you simply forget about a relationship that could have been?