A little sexual healing.

"I'm sorry," You say calmly, leaning down to kiss Erin on the lips. "I don't want to hurt you."

"Oh, Alex, I want you..." Erin sobs against your lips. "I just ache so much inside."

To your surprise, Erin's hand reaches down to grasp your cock. She winces slightly as she rubs her pussy with it, up and down along the slit. It feels really good, but you are concerned that you are hurting her.

"Erin, I..." You attempt to pull back, but she keeps a firm grip on you. Brittney looks on with interest, trying to read the expression on her sister's face.

"No. Don't stop. It may hurt, but I want to feel you inside me. I want you to make love to me. " Erin moans, positioning your cock just right. You ache to drive inside her, but you check the impulse, merely moving slightly. You feel her folds opening gingerly around your cock.

Erin's eyes squeeze shut for an instant, before she opens them and stares into yours. She inhales briefly, her free hand coming up to rub at your cheek. She releases your cock, and slides her hand around to pull gently at your hip.

"Take me..." Erin gasps, before kissing you deeply. Her tongue quests around your mouth as you push forward just a little. Erin stiffens a little, before nodding softly and pulling on your hip again.

"Are you sure you're ok?" you whisper as you break the kiss for a moment. "You don't have to..."

"Make her feel good, Alex." Brittney says, looking on. "She needs to feel good."

Erin nods at her sister's appraisal, kissing you once again. Occasionally she winces as you two merge, but finally you lie together, your cock fully buried within her body.

"It only hurts a little." Erin is almost crying with happiness. "Feels so good."

You smile, relieved that you didn't hurt her too badly. Your mouths merge once again as you slowly stroke your cock out of her. Then back in you go, her hips rising to meet you.

On and on the two of you move together, Brittney sitting nearby and stroking herself as she watches the two of you make love. You feel like you're taking all of the pain away from Erin, as she gasps and writhes beneath you, whispering how good you are making her feel.