有情人终成眷属

persevere and you will succeed (idiom); where there's a will, there's a way

a really determined person will find a solution (idiom); where there's a will, there's a way

Heaven will not disappoint the person who tries (idiom). If you try hard, you're bound to succeed eventually.

destined to meet but not fated to be together (idiom)

to tie the knot (idiom); to get married

effort will undoubtedly lead to success (idiom)