Only if he becomes your husband. As to section 8, you already asked that question before. You need to contact an attorney in TX who deals with specific section 8 rules. They differ from state to state.
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As long as there is not another ground of inadmissibility, then he should be able to adjust after your marriage.
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Once you are married, your husband would be eligible for adjustment of status. You will be able to sponsor him, but you will need a joint sponsor for the I-864 Affidavit of Support because you are not working.