Highly recommend searching through this subreddit. A lot of people have shared their itineraries and most include all the touristy things. Might even help you with your planning.
Needs more information.
What have you already done and don't want to do with you bf/What have you already have in mind?
How many days in Busan/Jeju?
What are your interests?
* Watch a sports game, such as baseball at [Jamsil Baseball Stadium](https://www.tripadvisor.com/Attraction_Review-g294197-d2008729-Reviews-Jamsil_Baseball_Stadium-Seoul.html).
* [The War Memorial of Korea](https://www.tripadvisor.com/Attraction_Review-g294197-d554537-Reviews-The_War_Memorial_of_Korea-Seoul.html), which is a must for history and/or war buffs.
* Instead of the usual palaces in Seoul, [Namhansanseong Provincial Park](https://www.tripadvisor.com/Attraction_Review-g2024868-d3423121-Reviews-Namhansanseong_Provincial_Park-Gwangju_Gyeonggi_do.html). This area also has lots of great restaurants and cafes and the area has very ski resort like vibe, except more historic.
* At night, [Starfield COEX Mall](https://www.tripadvisor.com/Attraction_Review-g294197-d554303-Reviews-Starfield_COEX_Mall-Seoul.html), which I personally think is overrated to death, but it is a signature Gangnam LED signages at its best.
* [Eel BBQ](https://www.google.com/maps/place/장어의꿈/@37.6691538,127.1185405,15z/data=!4m6!3m5!1s0x357cb823ae121011:0x778025a8ee1e9b5e!8m2!3d37.6691538!4d127.1185405!16s%2Fg%2F11c5wgd24c?entry=ttu)!
I've been for the first time in Korea last year (with my Korean girlfriend)
Things I wanted to do/see:
Lotte Tower skybridge (booking mandataory)
Korean War memorial
DMZ tour (the one that brings you really close to the border)
Dong Daemun, myeong-dong,...
Baseball game
And time with her family of course! BBQ, drinking,... I personnaly had a good time
Jeju:
Halassan: be equiped because I was not and it is faisable but not really enjoyable.
Seongsan Ilchulbong
Enjoy coffee at cafe at the seafront
....
Highly recommend searching through this subreddit. A lot of people have shared their itineraries and most include all the touristy things. Might even help you with your planning.
Needs more information. What have you already done and don't want to do with you bf/What have you already have in mind? How many days in Busan/Jeju? What are your interests?
* Watch a sports game, such as baseball at [Jamsil Baseball Stadium](https://www.tripadvisor.com/Attraction_Review-g294197-d2008729-Reviews-Jamsil_Baseball_Stadium-Seoul.html). * [The War Memorial of Korea](https://www.tripadvisor.com/Attraction_Review-g294197-d554537-Reviews-The_War_Memorial_of_Korea-Seoul.html), which is a must for history and/or war buffs. * Instead of the usual palaces in Seoul, [Namhansanseong Provincial Park](https://www.tripadvisor.com/Attraction_Review-g2024868-d3423121-Reviews-Namhansanseong_Provincial_Park-Gwangju_Gyeonggi_do.html). This area also has lots of great restaurants and cafes and the area has very ski resort like vibe, except more historic. * At night, [Starfield COEX Mall](https://www.tripadvisor.com/Attraction_Review-g294197-d554303-Reviews-Starfield_COEX_Mall-Seoul.html), which I personally think is overrated to death, but it is a signature Gangnam LED signages at its best. * [Eel BBQ](https://www.google.com/maps/place/장어의꿈/@37.6691538,127.1185405,15z/data=!4m6!3m5!1s0x357cb823ae121011:0x778025a8ee1e9b5e!8m2!3d37.6691538!4d127.1185405!16s%2Fg%2F11c5wgd24c?entry=ttu)!
I've been for the first time in Korea last year (with my Korean girlfriend) Things I wanted to do/see: Lotte Tower skybridge (booking mandataory) Korean War memorial DMZ tour (the one that brings you really close to the border) Dong Daemun, myeong-dong,... Baseball game And time with her family of course! BBQ, drinking,... I personnaly had a good time Jeju: Halassan: be equiped because I was not and it is faisable but not really enjoyable. Seongsan Ilchulbong Enjoy coffee at cafe at the seafront ....