The Meaning Of Always
Always means "at all points in time" or at "anytime". The term comes from the words all and ways, meaning that something is happening and will do so eternally.
The Meaning Of "Be Mine"
A possessive pronoun is a part of speech that attributes ownership to someone or something. Like all other pronouns, it substitutes a noun phrase and can prevent its repetition.
For example, in the phrase, "These glasses are mine, not yours", the words "mine" and "yours" are possessive pronouns and stand for "my glasses" and "your glasses," respectively. There are seven possessive pronouns in modern English: mine, yours, his, hers, its, ours, and theirs, plus the obsolete possessive pronoun thy/thine.