This is what is meant by "relationship with prescriptions". There are a few threads on that on here, do a tag search for "prescriptions". It's bad enough when there are prescriptions at all, but in this case you also have a double-standard. If T can't deal with you having other relationships, he shouldn't be having other relationships either.
Unfortunately, most of the discussions on this forum about prescriptive relationships never got to the point where people tried to figured out what to do if you are in one and want to work your way out of the prescriptive part.