My husband and I are busy and decided to keep our second son at his grandparents' for his first two years. Will this impact our relationship later?

Hi, I am sure you have your reasons to do so, but if you ask me, I would say yes, it could definitely affect the personal relationships. The first few years of a baby's life are extremely critical. The baby starts to form a strong emotional connect at this age, and most of the developmental milestones also happen around this time. In my case, both my daughters have bonded with me and my husband tremendously in the first few years, and the bond is only growing stronger. Also, since you mentioned this is your second son, it also means that your children will lose out on those precious years of bonding with each other. If possible, I would suggest you try and keep your kids with you. Else try and fit in as much time with them both as possible, as a family. All the best :)