There is a guy I've been talking to and we would like to be together but he lives in Ireland.Is there any way I can help him become a us citizen so we

If you're a US citizen then you can sponsor him for a fiancé visa which allows him to enter the US for 90 days. Once you get married in that time frame he can adjust status to get his green card. One condition to qualifying for the visa is that you must have physically met him within two years of filing the fiancé case.