Love vs Lust

 Most people have never understood the difference between love and lust. Lust is an altered state of consciousness programmed by the primal urge to procreate.  when a person is experiencing the intense lust of physical attraction. Also in the early stage of a relationship, when the sex hormones are raging, lust is fueled by idealization and projection--you see what you hope someone will be or need them to be--rather than seeing the real person, flaws and all.  Pure lust is based solely on physical attraction and fantasy--it often dissipates when the "real person" surfaces. It's the stage of wearing rose colored glasses when he or she "can do no wrong." Being in love doesn't exclude lust. In fact, lust can lead to love. However, real love, not based on idealization or projection, requires time to get to know each other. Here are some signs to watch for to differentiate pure lust from love.

Signs of lust

• You're totally focused on a person's looks and body.
• You're interested in having sex, but not in having conversations.
• You'd rather keep the relationship on a fantasy level, not discuss real feelings.
• You want to leave soon after sex rather than cuddling or breakfast the next morning.
• You are lovers, but not friends

Signs of love

• You want to spend quality time together other than sex.
• You get lost in conversations and forget about the hours passing.
• You want to honestly listen to each others feelings, make each other happy.
• He or she motivates you to be a better person.
• You want to get to meet his or her family and friends.

http://www.psychologytoday.com/blog/emotional-freedom/201108/lust-vs-love-do-you-know-the-difference.
Most people  have issues with ex's.

Q My boyfriend of two years broke up with me six moths ago but he still texts everyday to say things like "i really miss you and i feel like am going to regret ending our relationship. Now this girl doesn't understand and needs advise.
A. He is Using you as an emotional booty call, he wants to be reassured that you are still in to him.
What he says maybe true to an extent but this effed up dynamic only benefits him by making it more difficult for you to date other guys which means your ex doesn't need to truly deal with the fact that your relationship is over.
Whether he realizes it or not, he's acting selfish and playing games. He hasn't found anyone else and when he does he'll stop calling. Tell him that you need space and you don't want to talk for a while. Then do what he doesn't want you to do. move on