1) you can file for divorce on grounds of desertion and mental cruelty .
2) section 13 (1) (b) provides that petitioner can file for divorce on grounds of desertion if respondent has deserted petitioner for period of 2 years prior to filing of petition for divorce .
3) you cannot remarry during subsistence of earlier marriage . if you remarry your wife will file case of bigamy against you under section 494 of IPC
4) wait for divorce being granted by family court then remarry