I'd suggest using Neville Goddard principles and living in the end of what you want. Search around the forum as there's a whole host of information. The 25 day challenge may get you feeling more positive in general.

I am on day 2 of this challenge and I would like to post my updates for everyone. Im new here. My sp isnt an ex but my current bf. The problem is trust issues and such led to a disconnect and he has grown so distant I don’t even recognize him anymore. I know he is in love with someone else. I plan to attract his love and attention and remove the third party completely. I can post daily updates. Day 1 I didn’t see any changes. Day 2 I almost felt worse, but I saw him today. In fact he is currently sleeping beside me. For the first time in a while he showed up at my door smiling. He has been giving me more kisses and touching me more when before he barely came near me. That’s a huge positive thing to see. I will continue to update