You are a person who likes to be straight forward and generally you may stay away from diplomatic communication.
As per astrological analysis we would not be able to find whether you can marry a particular person but it is possible to find the extent of compatibility between the two individuals. In your case you have quite a good compatibility with your girlfriend against many Gunas.
Further the current ongoing time is quite positive for you to open up frank communication and marital tie up. This conducive time spans till June 2023.
Mesh lagna with the lagna lord Mars posited in the eleventh house; Seventh lord Venus posited in the eighth house; The Ashtakoota Guna matching of both the charts is quite good and this alliance can be taken ahead. Moon Maha Dasha is ongoing with Jupiter Antar Dasha which spans up to June 2023.