Congrats you just got love bombed!
Not given the space and time to grief? Hes here for you! You dont need to grief bcuz grief is bad!!
UnConditional love and financial support? Just wait until it becomes conditional, all your emotions that you unconsciously kept inside will bubble up and fuck you up so good you wont be able to get out of bed.
Seriously tho, Grief is a natural thing that is bound to happen, and grieving the loss you just experienced is much better that letting it fester and grow into a monster with teeth.
This isn't him being lovely and kind it's him being manipulative and trying his best for the mc to fully depend on him (both emotionally financially and physically) by becoming the only one in his life. His only family, friend, and financial supporter.
When the love ends (which will, because it's born conditional) he will stop perceiving the mc for a while only to then start feeding him little ounces of love whenever he does something "good"
Like how a drug dealer gives you a freebie of heroin at first to get you addicted and when you run out you go to him and buy for the first time.