using System.Collections.Generic;
using System.Text.RegularExpressions;
public static void Main()
string s = "nika ?+ marry = love+sandra ?+ alex = love";
string[] result = Regex.Split(s, "\\?{0}\\+", RegexOptions.Multiline);
s = String.Join("\n", result);
Regex rgx = new Regex("\\?\\n");
result = Regex.Split(s, "\\n", RegexOptions.Multiline);
foreach (string match in result)
Console.WriteLine("'{0}'", match);