This dude is such a jerk! adviiccceee!!!?

ok so dakota (guy) is OBSSESSED with Devin (girl). my friend krysten likes dakota and is really good friends with both of them. devin acts like dakota is hers she holds his hand and calls him her BF. but she told him she doesnt like him like that. so she has been leading him on and wiping him off. krysten sits with them at lunch but now the TEXTED her saying"hey go find ur own table to sit at" TEXTED ok so what should i tell dakota?