Help me translate this into latin. Please. It´s for a very important person.

The guy who does about 99% of the Latin translations is on vacation this week.

My constant
Constans meus (masc.)
Constans mea (fem.)

My constant love beyond death
Amor meus constans trans mortem

My constant companion beyond life
Comes meus constans trans vitam (masc.)
Comes mea constans trans vitam (fem.)

Never forget what´s written beyond time
Nunquam obliviscere quod trans tempus scriptum est

I love you
Te amo

My little princess
Parva principissa mea