Formal/Literary:
* Rwy'n dy garu, a byddaf bob amser, priodi fi.
* This is the most formal and poetic way to say it. It uses the present tense "rwy'n dy garu" (I love you) to emphasize the enduring nature of your love.
* "Byddaf bob amser" means "I will always" and "priodi fi" means "marry me".
More Casual:
* Rwy'n dy garu, a byddwn i bob amser, priodi fi.
* This is slightly more casual, using "byddwn i" (would I/I would) instead of "byddaf" (I will). It still conveys a strong sense of commitment but is less formal.
* Dw i'n dy garu, a byddaf bob amser, priodi fi.
* Using "Dw i" (I) makes it even more conversational and informal.
Other Options:
* Cariad, priodi fi? (Love, marry me?) - This is a direct question, more concise and to the point.
* Rwy'n dy garu'n fawr iawn, a byddaf bob amser, priodi fi. (I love you very much, and I always will, marry me.) - Adding "yn fawr iawn" (very much) emphasizes the depth of your love.
Important Notes:
* Gender: Welsh grammar uses different forms for "you" depending on whether you are addressing a male or a female. The examples above use the feminine form ("dy" for "you"). If you're addressing a male, you would use "ti" instead.
* Pronunciation: Welsh pronunciation can be challenging for English speakers. It's a good idea to find an online pronunciation guide or ask a native Welsh speaker for help.
Remember, the best way to express yourself is to choose the wording that feels most natural and authentic to you. Good luck!