How do I make a married man ,marry me

Assalamu aleykum. I am 23 years old .I have been in a haram relationship with a married man for 3 years now. The truth is I couldn't end things with this man because I love him so much . I tried but I just couldn't . So the only way is for him to marry me.i have been ready since I met him . But the problem is him . It took 2 years just to come n introduce himself to my family. He promised me that he will marry me .but days are passing by n there is nothing more that he did .I want more but he keeps on delaying n giving me excuses. Wallahy I have reached a point I am drained n so frustrated . What should I do . Should I end the relationship for good n leave or have more sabr .