Hello,
Have a nice time in the mystic board!
Well in my point of view, sometimes if you please some spirit with something he likes, he might feel the happy on his eyes, you been from hawaii was something that make him feel happy as if he was alive and find you in a diferent circunstance, and with the flowers on your hard is something you can make to pleasure the others ( thats why somepeople bring flower to the dead bodys, most doesn't know that, so If you dont like flowers, ask them to not put it on your tomb). Since your parent died, you got a sensible sign that everyone that have someone dead have, you started to feel other energies, your body was open to recive it, and something I actually think on that, is that maybe in other lifes you might be really good friends, or maybe you guys are from the same circle of life walking in the same areas. I donno maybe you could be his dad/mon son/daughter/brother in other life, I think you should send such question to the psiquic area on this mysticboard.

have a nice stay here I hope you find all the answers you need