looking forward to spend vs looking forward to spending

Some examples from the web:

• I'm sure you're looking forward to returning to midwifery, but I would ask that you spend the initial few weeks on the district rota.
• Is looking forward to having her husband back.
• Looking forward to your next letter.
• He's looking forward to attending the negotiations.
• I'm looking forward to the ocean.
• I'm looking forward to retirement.
• Looking forward to sampling your fare.
• Looking forward to trying that soup.
• Looking forward to your demo tomorrow.
• And looking forward to some quality time together.
• I am looking forward to the debate.
• I am looking forward to constructive discussions.
• I'm looking forward to tonight.
• Looking forward to you coming down and visiting.
• And there was me looking forward to the next morning I could spend cutting up a body in a wood.
• We are looking forward to the London conference at which we hope President Karzai will present his plans, and we are looking forward to increasing our support after that.
• We're looking forward to some blowback.
• I'm looking forward to it, Mr. Secretary.
• Although I was looking forward to seeing you personally.
• I'm keenly looking forward to the second ballot.

Some examples from the web:

• They must be looking forward to spending some time with you now that everything's behind you.
• I hope you're looking forward to spending 24 hours in hell, Bashir.
• I was looking forward to spending the holiday with Stormfly.
• After pulling two double shifts, I'm looking forward to spending time with Maddy.
• She said she was looking forward to spending quality time with just us.
• And I'm looking forward to spending that time alone, taking care of myself.
• Says he's looking forward to spending some time with me, though.
• I was just looking forward to spending some time with the family this weekend, that's all.
• I'm looking forward to spending time with my wife, working on some new hobbies.
• Your mother and I need to talk about, besides, I was looking forward to spending some time with you.
• I know. I just... I was really looking forward to spending time with you.
• Well, I am looking forward to spending Thanksgiving with my two men, just the three of us.
• I'm looking forward to spending the rest of my natural life with her.
• They've been looking forward to spending time with you.
• Kelsey's really looking forward to spending some quality time with you when the baby's born.
• Kelsey's really looking forward to spending some quality time with you when the baby's born.
• Sounds like Hector's looking forward to spending time with you.
• No one was looking forward to spending rest of lives with him on other planet.
• She was so looking forward to spending time with you alone, And then you show up at our doorstep with your lover, Without a word of warning.
• I personally am looking forward to spending more time here in the Buy More trenches, getting to know the rank and the file.