She can file a complaint under section 494.ipc the offence of bigamy when your are married and you do second marriage than it is offence under Indian penal code.
So wife will try to prove that you are married to the second girl.
Section 494 in The Indian Penal Code
494. Marrying again during lifetime of husband or wife.—Whoever, having a husband or wife living, marries in any case in which such marriage is void by reason of its taking place during the life of such husband or wife, shall be punished with imprisonment of either description for a term which may extend to seven years, and shall also be liable to fine.
(Exception) —This section does not extend to any person whose marriage with such husband or wife has been declared void by a Court of competent jurisdiction, nor to any person who contracts a marriage during the life of a former husband or wife, if such husband or wife, at the time of the subsequent marriage, shall have been continually absent from such person for the space of seven years, and shall not have been heard of by such person as being alive within that time provided the person contracting such subsequent marriage shall, before such marriage takes place, inform the person with whom such marriage is contracted of the real state of facts so far as the same are within his or her knowledge.
Now.since you are not married to second girl and there is no evidence other than photo than you can take.defecne she is just friend and you have no marital relationship nor you have married by tradition nor under any law.
Also she can file.offecne under 498a that is cruelty by husband or in-laws and for domestic violence under protection of women from domesntic violence act on you.
Kindly be specific what you want to know there can be number of more cases that she can be filed though in course of trial all can be.proved false.