When will it all get lighter?

[Cupofteaonesugar]

3 years after separation and my son going to his dads still breaks my heart. Every time. I may be exhausted as I very much do the lions share, but I still miss him terribly and feel so sad that he's not home every night :(
Over time a lot has got easier... emotionally completely disconnected from ex and I'm finally starting to see the progress I've made. I feel stronger. But this hasn't in the slightest for easier :(

Does he enjoy seeing his Dad? Is his dad a good parent?

In my case I don't have to worry about ds' dad m's parenting and ds enjoys his time with dad which makes things much easier. I have pangs of wondering what he's up to but he's only with his dad EOW for one night so I see him within 24 hours.

He stays with his dad for 2 nights a week, however, it's not as long as it sounds. He picks him up late fri and drop off early Sunday.
DS is ok, but he doesn't like staying for 2 nights as he wants to come home after one :(
He had a week in the summer holidays which he found very hard and he said "I never want to go away for that long ever again" but dad wouldn't entertain my suggestion of 2 half weeks.

I don't have any immediate concerns other then him being dishonest with me about little things.

But I just find it so hard.