Sister, Allah knows best, but from my
Very limited knowledge derived from those verses and the little I've read, and the story of Ibrahim (pbuh) and his father.
You are an individual ultimately,
You were sent to earth just like they were and the relationship bond will not exist with all the heartfelt love you now feel, the first verse clearly tells us that all sense of lurking injury shall be removed from the hearts of those who are fortunate enough to attain jannah, and the feeling of anguish you now describe sounds like a lurking sense of injury too.
If you really care about your loved ones, please do your best to help them achieve the best in this world AND the hereafter, sacrificing the former for the latter where necessary.
The Prophet pbuh tried his best for his beloved uncle Abu talib, but after he died, he gave up. However if he had said LA ILAAHA ILLALLAH, the prophet pbuh would have had the chance to try to intercede for him on judgement day. So if your parents are Muslim and even pass away, you can still do your best to work for their salvation and even intercede if you attain a high status,
The only regrets and sighs shall be, if only I had remembered Allah more, maybe sort of like coz someone's driving a Bugatti while you managed a decent BMW?
Lol I found the Hadith:
Muaaz bin Jabal narrated that The Messenger of Allah (pbuh) said, “The people of Paradise will only regret that moment which had been empty of Zikr of Allah.” (Beheqi)
If you are still wondering how it can be possible to forget your parents, just consider if you see it happen here on earth. Do you not see certain kuffar jam their parents in old peoples homes because they want to enjoy themselves and not sacrifice work, and their wives don't want to help look after them either? it's often a result of satan's touch (bondage to usury) and selfish materialism - since this world is their paradise.
Well people in jannah won't have to feel pity or sacrifice or give to the poor.
They just have to think about "living it large" and "to the max" since they made all the sacrifices they needed on earth while others were selfish and miserly.
I found this for u though:
http://www.missionislam.com/knowledge/Friendship.htm
Peace