You can want someone and still choose yourself.

Wanting someone and being good for them are separate questions, and the confusion between them causes a great deal of avoidable pain. The pull you feel is real information about attraction, not about whether staying serves your life. You can hold genuine feeling for a person and still decide the arrangement is costing you more than you can keep paying.

If you are trying to argue yourself out of the wanting before you can act, you may be waiting for a feeling that will not arrive on schedule. Let the wanting remain and make the decision anyway. Be gentle about it, because doing the right thing while still caring is one of the harder things a person does.