Hakka song: problem translating a bit
结连理 means &quot;get married&quot; or &quot;become loving husband and wife&quot;

'结' short for '结成'(form)
'连理' came from '连理枝' (intertwined trees)

连理枝是指两棵树的枝干合生在一起的一种植物。连理枝又称相思树、夫妻树、生死树，比喻夫妻恩爱。连理枝在自然界已相当罕见。
'连理枝 (intertwined trees) refers to two trees planted next to each other and their branches intertwined as they grow. Also known as lovesick tree, husband and wife tree, life and death tree (two trees that live together, die together). Metaphor for husband and wife love. It is quite rare in nature.
'连' means 'linked'; '理' short for '紋理' which means 'pattern'; '连理' refers to the pattern of the intertwined branches.
Related phrase: &quot;在天愿为比翼鸟, 在地愿为连理枝&quot;

I suggest translate it as &quot;till death do us part&quot; which is a marriage vow perfectly match the spirit of 结连理 (become intertwined trees) - 连理枝 stay together for life.

'齐家' in this context is a pronoun similar to '大家' in Cantonese (both of us)

'爱' might be a typo of '我' in '爱亲口讲汝知'. It could be '我亲口讲汝知' (I personally tell you); If 爱 is not a typo, then the phrase means &quot; Love, I personally tell you&quot; with 'love' as the topic and 'I personally tell you' as the comment.