The groom traditionally pays for several specific wedding-related expenses, often shared with or covered by his family. These include:

• The bride's engagement ring and wedding band

• The groom's own attire and accessories such as tuxedo, shoes, tie, socks, cufflinks, and sometimes the attire of the groomsmen (though groomsmen often pay for their own suits)

• The rehearsal dinner, including venue, food, drinks, entertainment, and invitations, which is typically covered by the groom's family

• The officiant's fee or donation, and related transportation and lodging if the officiant is from out of town and invited by the groom's family

• The marriage license fee

• The bride's bouquet, boutonnieres for the groom and groomsmen, corsages for immediate family members, and sometimes other floral expenses related to the wedding party, depending on local customs

• Gifts for the bride, groomsmen, and parents from the groom

• Transportation for the groom and best man to the ceremony

• The honeymoon expenses, traditionally paid by the groom or his family, though modern couples may fund this differently

In summary, the groom is responsible for the engagement and wedding rings, his attire, gifts, and some ceremony-related costs like the officiant and marriage license, while his family traditionally covers the rehearsal dinner, some floral costs, and sometimes the honeymoon

. However, these roles can vary widely today depending on the couple's preferences and family arrangements.