If your boyfriend is Dev Gana and you are Rakshasha Gana, it means that there is Gana dosha. You need to check if the Gana dosha gets cancel. You can check that by seeing if you have full score in Graha Maitri. You should get 5 on 5. Also you can check navamsha chart and see if there is maitri in the D9 chart. Also check if your Graha Milan is good, marriage can be considered if overall factors are favourable despite Gana dosha coming in your ashtkoot guna milan.
Blessings,
Navneet Khanna
Vedic Astrologer