– A local girl rejecting an SAF employee
The girl should first learn the difference between “you’re” and ‘your’, and then about relative pronouns, before assuming that the chap in the army has no ambition.
“You’re” is a contraction of ‘you are’ and ‘your’ is a possessive pronoun.
In the second sentence, ‘who’ should replace ‘that’ as the correct relative pronoun, grammatical trends notwithstanding.
As for prose style, ‘for your life’ is redundant because it is indicated in the sentence that the ambition or lack of it, is related to the man: “…you probably don’t have much ambition…”.
The man is better off without this illiterate girl.