So my ex and I have an almost 6 year old son. I have custody Monday to Friday and his dad takes him on weekends. Now, when we broke up he kept the house we shared and I had to move (i was living in the lounge at my mums house for 9 months) he gave his tenancy up and moved in with his girlfriend. About 8 months ago they decided to once again give up their tenancy (which was 3 miles from my house) to stay somewhere more than 20 miles away. Please bare in mind that I dont drive and have to use public transport. Due to us living in a very rural area, the journey will take over 2 hours on a Friday and 3 hours on a Sunday. Its also a weekly cost of about 15 for both myself and my son. My ex believes it is fair that I travel the 20 miles every Friday to drop my son off, and then on Sunday I should travel 3 miles to meet him with my son. Two sets of bus fares on two different days, an expense I cannot afford right now. So AIBU for expecting him to cover the majority of the travel and the costs of it, since he is the one who chose to leave his tenancy and move so far away?