Fortes pernah membela tim nasional {{timnas|U-20 Porgual|Portugal U20}}<ref>[https://www.transfermarkt.com/portugal-u20/startseite/verein/16373/saison_id/2013 Portugal U20 tahun 2013] di Transfermarkt</ref> pada [[:en:2014 Toulon Tournament|Turnamen Toulon 2014]].<ref>{{cite news|url=https://www.record.pt/futebol/selecoes/detalhe/torneio-de-toulon-portugal-mexico-2-0-884312|title=Torneio de Toulon: Portugal-México, 2–0|trans-title=Toulon Tournament: Portugal-Mexico, 2–0|newspaper=[[Record (newspaper)|Record]]|language=pt|date=21 May 2014|access-date=27 August 2021}}</ref><ref>{{cite news|url=https://www.record.pt/futebol/selecoes/detalhe/torneio-de-toulon-portugal-chile-3-1-884681|title=Torneio de Toulon: Portugal-Chile, 3–1|trans-title=Toulon Tournament: Portugal-Chile, 3–1|newspaper=Record|language=pt|date=23 May 2014|access-date=27 August 2021}}</ref>
