"Say I love you"
"Ciel"
"my heart is beating"

Well jackal is your go-to man for this kind of stuff and I don't know your tastes, but I like:

Girl the Wild's
Area D - Inou Ryouiki
The Friendly Winter
City Of Darkness
Kiwaguro no Brynhildr

i like Psychological and Seinen manga

Well then only two of those fit your tastes. These also might though:

Life Is Money (It's short but it's okay)
Sun-ken Rock
Kiwaguro no Brynhildr (It's classified as Seinen, but I don't think it is)
City of Darkness

I guess those should be okay.

Mein Kampf

Immortal Regis.

Click on "surprise me" on whatever manga hosting website that you use to read online.

usually work for me.

Veritas.