If the person whom God loves is dead and does not know of God's love anymore, then that is keeping someone from God's love.
Your beliefs say death keeps us from God's love.
moorea944 has the right of it. Otherwise this scripture would be meaningless:
The dead do not praise Jah;
Nor do any who go down into the silence of death. (Lit., "into silence")
- Psalm 115:17
Death keeps us from loving and praising God but it does not prevent him from loving and remembering us with favor.
"On the contrary, in all these things we are coming off completely victorious through the one who loved us. For I am convinced that neither death nor life nor angels nor governments nor things now here nor things to come nor powers nor height nor depth nor any other creation will be able to separate us from God's love that is in Christ Jesus or Lord." - Romans 8:37-39
(The only thing that can separate us from God's love is walking away away from him while alive.)
"For God is not unrighteous so as to forget your work and the love you showed for his name by ministering and continuing to minister to the holy ones." - Hebrews 6:10
If we die, nonexistance is generally not the end. A resurrection will cause many to stand up alive again.
If a man dies, can he live again?
I will wait all the days of my compulsory service
Until my relief comes.
You will call, and I will answer you.
You will long (or "yearn.") for the work of your hands.
- Job 14:14,15
"Lazarus or friend has fallen asleep, but I am traveling there to awaken him." - John 11:11
Jesus, however, had spoken about his death. But they imagined he was speaking about taking rest in sleep. Then Jesus said to them plainly: 'Lazarus has died.'" - John 11:13,14
[Jesus] cried out with a loud voice: "Lazarus, come out!" The man who had been dead came out with his feet and hands bound with wrappings, and his face was wrapped with a cloth. - John 11:43b,44a