1. Tell her straight

2. if she lives with you tell her you lost your job and won't be able to provide for her like before. Literally, eat only bread and drink water every day. You will see how she will break up the relationship.

3. Tell her, you have to move to somewhere else.

4. Say you have cheated on her

5. tell her she isn't attractive anymore.

6. say you want an open relationship

but you have feelings for her?

Once you hit the bottom she won't have those feelings for you. Get what you want from them and then move on. It's for your sake.

side note: briffaults law.