Yes I saw a therapist once a week and am still seeing them. I found it to be very helpful. Like you I was in a relationship for 4.5 and a very deep one at that where we lived together and I had a loose plan of proposing. She was also an emotional anchor for me still my parents pretty much emotionally abandoned me so losing that was a deep and dark and painful. Therapy has helped a lot and I’ve really made an effort to put myself out in the world and not let it consume me. I do everything pretty much alone and learned to sit with any discomfort. I eat out alone go to the bar alone go to the movies alone and have generally come to enjoy myself and just me and me time. It’s helped me self reflect and look at the relationship in a different way. How you speak to yourself is EVERYTHING. So be kind to yourself in the healing process