Neeyanente jeevitham.
In Malayalam, 'for life' means "aajeevananthathekku/maranam varekku/ sthiramayittu (ആജീവനാന്തത്തേക്ക് / മരണംവരേക്ക് / സ്ഥിരമായിട്ട്)"
You have to say,"Jeevitham ethra sundaram"
I wanna spend my whole life with you
To say "kiss" in Malayalam, you can use the word "ചുംബനം" (chumbanam).
You can say "ഞാൻ മലയാളം അറിയുന്നു" (njan malayalam ariyunnu) to mean "I know Malayalam" in Malayalam.
You can say "അതെന്താണ് അത്" (athenthaanu athu) in Malayalam to ask "What is that".
In Malayalam we say 'dayavaayi' for the English word please.
In Malayalam, to refer to a husband politely, you can use the term 'ഭാര്യ' (bharya), which means husband. Alternatively, you can use the term 'ജനമിത്രൻ' (janamithran), which translates to life partner in English.
veettil malayalam samsarikkaruthu
In Malayalam we use 'engane' for the word 'how'.
santhoshakaramaya dampathya geevitham