Maintanance under CrPC 125 will not be applicable once you remarry. He is no longer liable.
CrpC 125 is read as follows:
Order for maintenance of wives, children and parents.
(1)If any person having sufficient means neglects or refuses to maintain-
(a)his wife, unable to maintain herself,
"wife" includes a woman who has been divorced by, or has obtained a divorce from, her husband and has not remarried.
I did not understand how is he harassing you? What he can do is move an application u/s 127 CrpC
CrPC 127 (3) is read as:
(3) Where any order has been made under section 125 in favour of a woman who has been divorced by, or has obtained a divorce from, her husband, the Magistrate shall, if he is satisfied that-
(a) the woman has, after the date of such divorce, remarried, cancel such order as from the date of her remarriage;
(b) the woman has been divorced by her husband and that she has received, whether before or after the date of the said order, the whole of the sum which, under any customary or personal law applicable to the parties, was payable on such divorce, cancel such order,-
(i) in the case where, such sum was paid before such order, from the date on Which such order was made,
(ii) in any other case, from the date of expiry of the period, if any, for which maintenance has been actually paid by the husband by the woman;
(c) the woman has obtained a divorce from her husband and that she had voluntarily surrendered her rights to maintenance after her divorce, cancel the order from the date thereof.
so if he moves an application u/s 127 CrpC your maintenance will be cancelled..
and why should you pay money to him? Dont pay him anything? He cannot do anything...