YOU SAID:

If you're able to come into my birthday party ill be more than happy!

INTO JAPANESE

私の誕生日パーティーに来ていただければ、とても嬉しいです!

BACK INTO ENGLISH

I would be so happy if you could come to my birthday party!

INTO JAPANESE

私の誕生日パーティーに来てくれたら嬉しいです！

BACK INTO ENGLISH

I would love it if you came to my birthday party!

INTO JAPANESE

私の誕生日パーティーに来てくれたら嬉しいです！

BACK INTO ENGLISH

I would love it if you came to my birthday party!