Bit of background so there's no drip feeding. Got married on my 18th birthday. Eloped. ExH 20 years my senior. Parents FREAKED, but forgave me.
Had Twin DS' after 5 years of turbulent marriage - not planned. ExH and I split up when Ds' 3 months old due to LOTS of adultery (his) and gayness (mine). Met DP about 18 months later. ExH and I and DP have a good 'working relationship' birthday cards, xmas cards, etc etc. All very amicable.
I have always encouraged ExH to have a relationship with DS' and lots of contact - two weekends a month, 2 weeks in summer hols and every half term.
Soo anyway we moved about 2 hours drive away 5 years ago and as neither my ExH or I drive my DP, who does, has dropped the DS's off and collected at every visit as it was our choice to move (one DS is Autistic and didn't handle the city at all well)
A couple of years ago ExH started dating someone who drives they live together now, very serious engaged to be married etc.
DP is currently unable to do long journeys due to a back injury which is awaiting surgery. ExH said he and his OH would pick up and drop off DS's from now on - That was 3 months ago and he's not seen them at all since, though we've been expecting them to collect DS's every other weekend and for half term.
Lots of texts about ExH's OH being 'too ill', or 'not up to it' Though DP has taken DS's when sick as a pig with flu, tummy bugs and once even a splinter in the Butt (long story involving an old wooden slide) as we both feel it's important for DS's to see their Bio Dad.
The DS's don't seem to be fussed at all TBH. They call ExH 'Uncle Dad' (though not to his face and certainly not when they think we can hear) but I think they're too young to make a decision on a relationship which could affect their life forever.
I've tried discussing train and N.express with ExH but it is too much money/too long a journey. He keeps saying how much he's missing them and how hard it is not seeing them. DP thinks ExH is waiting for us to cave and say 'oh look, we'll just bring them again Ok?' but DP is physically unable to sit for more than about 30 minutes without getting spasms which is kinda dangerous when driving!
So, should I just hope ExH sorts his shit out or should I explain to DS's they won't be seeing their BioDad for a while and just stop trying?